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 */
16
17package com.android.contacts.list;
18
19import android.app.ActionBar;
20import android.app.Activity;
21import android.app.LoaderManager.LoaderCallbacks;
22import android.content.AsyncTaskLoader;
23import android.content.Context;
24import android.content.Intent;
25import android.content.Loader;
26import android.graphics.drawable.Drawable;
27import android.os.Bundle;
28import android.util.Log;
29import android.view.LayoutInflater;
30import android.view.MenuItem;
31import android.view.View;
32import android.view.ViewGroup;
33import android.widget.AdapterView;
34import android.widget.BaseAdapter;
35import android.widget.ListView;
36
37import com.android.contacts.ContactsActivity;
38import com.android.contacts.R;
39import com.android.contacts.model.AccountTypeManager;
40import com.android.contacts.model.account.AccountType;
41import com.android.contacts.model.account.AccountWithDataSet;
42import com.google.common.collect.Lists;
43
44import java.util.ArrayList;
45import java.util.List;
46
47/**
48 * Shows a list of all available accounts, letting the user select under which account to view
49 * contacts.
50 */
51public class AccountFilterActivity extends ContactsActivity
52        implements AdapterView.OnItemClickListener {
53
54    private static final String TAG = AccountFilterActivity.class.getSimpleName();
55
56    private static final int SUBACTIVITY_CUSTOMIZE_FILTER = 0;
57
58    public static final String KEY_EXTRA_CONTACT_LIST_FILTER = "contactListFilter";
59    public static final String KEY_EXTRA_CURRENT_FILTER = "currentFilter";
60
61    private static final int FILTER_LOADER_ID = 0;
62
63    private ListView mListView;
64
65    private ContactListFilter mCurrentFilter;
66
67    @Override
68    protected void onCreate(Bundle icicle) {
69        super.onCreate(icicle);
70        setContentView(R.layout.contact_list_filter);
71
72        mListView = (ListView) findViewById(android.R.id.list);
73        mListView.setOnItemClickListener(this);
74
75        ActionBar actionBar = getActionBar();
76        if (actionBar != null) {
77            actionBar.setDisplayHomeAsUpEnabled(true);
78        }
79
80        mCurrentFilter = getIntent().getParcelableExtra(KEY_EXTRA_CURRENT_FILTER);
81
82        getLoaderManager().initLoader(FILTER_LOADER_ID, null, new MyLoaderCallbacks());
83    }
84
85    private static class FilterLoader extends AsyncTaskLoader<List<ContactListFilter>> {
86        private Context mContext;
87
88        public FilterLoader(Context context) {
89            super(context);
90            mContext = context;
91        }
92
93        @Override
94        public List<ContactListFilter> loadInBackground() {
95            return loadAccountFilters(mContext);
96        }
97
98        @Override
99        protected void onStartLoading() {
100            forceLoad();
101        }
102
103        @Override
104        protected void onStopLoading() {
105            cancelLoad();
106        }
107
108        @Override
109        protected void onReset() {
110            onStopLoading();
111        }
112    }
113
114    private static List<ContactListFilter> loadAccountFilters(Context context) {
115        final ArrayList<ContactListFilter> result = Lists.newArrayList();
116        final ArrayList<ContactListFilter> accountFilters = Lists.newArrayList();
117        final AccountTypeManager accountTypes = AccountTypeManager.getInstance(context);
118        List<AccountWithDataSet> accounts = accountTypes.getAccounts(false);
119        for (AccountWithDataSet account : accounts) {
120            AccountType accountType = accountTypes.getAccountType(account.type, account.dataSet);
121            if (accountType.isExtension() && !account.hasData(context)) {
122                // Hide extensions with no raw_contacts.
123                continue;
124            }
125            Drawable icon = accountType != null ? accountType.getDisplayIcon(context) : null;
126            accountFilters.add(ContactListFilter.createAccountFilter(
127                    account.type, account.name, account.dataSet, icon));
128        }
129
130        // Always show "All", even when there's no accounts.  (We may have local contacts)
131        result.add(ContactListFilter.createFilterWithType(
132                ContactListFilter.FILTER_TYPE_ALL_ACCOUNTS));
133
134        final int count = accountFilters.size();
135        if (count >= 1) {
136            // If we only have one account, don't show it as "account", instead show it as "all"
137            if (count > 1) {
138                result.addAll(accountFilters);
139            }
140            result.add(ContactListFilter.createFilterWithType(
141                    ContactListFilter.FILTER_TYPE_CUSTOM));
142        }
143        return result;
144    }
145
146    private class MyLoaderCallbacks implements LoaderCallbacks<List<ContactListFilter>> {
147        @Override
148        public Loader<List<ContactListFilter>> onCreateLoader(int id, Bundle args) {
149            return new FilterLoader(AccountFilterActivity.this);
150        }
151
152        @Override
153        public void onLoadFinished(
154                Loader<List<ContactListFilter>> loader, List<ContactListFilter> data) {
155            if (data == null) { // Just in case...
156                Log.e(TAG, "Failed to load filters");
157                return;
158            }
159            mListView.setAdapter(
160                    new FilterListAdapter(AccountFilterActivity.this, data, mCurrentFilter));
161        }
162
163        @Override
164        public void onLoaderReset(Loader<List<ContactListFilter>> loader) {
165        }
166    }
167
168    @Override
169    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
170        final ContactListFilter filter = (ContactListFilter) view.getTag();
171        if (filter == null) return; // Just in case
172        if (filter.filterType == ContactListFilter.FILTER_TYPE_CUSTOM) {
173            final Intent intent = new Intent(this,
174                    CustomContactListFilterActivity.class);
175            startActivityForResult(intent, SUBACTIVITY_CUSTOMIZE_FILTER);
176        } else {
177            final Intent intent = new Intent();
178            intent.putExtra(KEY_EXTRA_CONTACT_LIST_FILTER, filter);
179            setResult(Activity.RESULT_OK, intent);
180            finish();
181        }
182    }
183
184    @Override
185    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
186        if (resultCode != Activity.RESULT_OK) {
187            return;
188        }
189
190        switch (requestCode) {
191            case SUBACTIVITY_CUSTOMIZE_FILTER: {
192                final Intent intent = new Intent();
193                ContactListFilter filter = ContactListFilter.createFilterWithType(
194                        ContactListFilter.FILTER_TYPE_CUSTOM);
195                intent.putExtra(KEY_EXTRA_CONTACT_LIST_FILTER, filter);
196                setResult(Activity.RESULT_OK, intent);
197                finish();
198                break;
199            }
200        }
201    }
202
203    private static class FilterListAdapter extends BaseAdapter {
204        private final List<ContactListFilter> mFilters;
205        private final LayoutInflater mLayoutInflater;
206        private final AccountTypeManager mAccountTypes;
207        private final ContactListFilter mCurrentFilter;
208
209        public FilterListAdapter(
210                Context context, List<ContactListFilter> filters, ContactListFilter current) {
211            mLayoutInflater = (LayoutInflater) context.getSystemService
212                    (Context.LAYOUT_INFLATER_SERVICE);
213            mFilters = filters;
214            mCurrentFilter = current;
215            mAccountTypes = AccountTypeManager.getInstance(context);
216        }
217
218        @Override
219        public int getCount() {
220            return mFilters.size();
221        }
222
223        @Override
224        public long getItemId(int position) {
225            return position;
226        }
227
228        @Override
229        public ContactListFilter getItem(int position) {
230            return mFilters.get(position);
231        }
232
233        public View getView(int position, View convertView, ViewGroup parent) {
234            final ContactListFilterView view;
235            if (convertView != null) {
236                view = (ContactListFilterView) convertView;
237            } else {
238                view = (ContactListFilterView) mLayoutInflater.inflate(
239                        R.layout.contact_list_filter_item, parent, false);
240            }
241            view.setSingleAccount(mFilters.size() == 1);
242            final ContactListFilter filter = mFilters.get(position);
243            view.setContactListFilter(filter);
244            view.bindView(mAccountTypes);
245            view.setTag(filter);
246            view.setActivated(filter.equals(mCurrentFilter));
247            return view;
248        }
249    }
250
251    @Override
252    public boolean onOptionsItemSelected(MenuItem item) {
253        switch (item.getItemId()) {
254            case android.R.id.home:
255                // We have two logical "up" Activities: People and Phone.
256                // Instead of having one static "up" direction, behave like back as an
257                // exceptional case.
258                onBackPressed();
259                return true;
260            default:
261                break;
262        }
263        return super.onOptionsItemSelected(item);
264    }
265}
266