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