1/*
2 * Copyright (C) 2013 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.settings;
18
19import android.content.ComponentName;
20import android.content.Context;
21import android.content.DialogInterface;
22import android.content.Intent;
23import android.content.pm.ApplicationInfo;
24import android.content.pm.PackageManager;
25import android.graphics.drawable.Drawable;
26import android.os.Bundle;
27import android.provider.Telephony.Sms.Intents;
28import android.telephony.TelephonyManager;
29import android.text.TextUtils;
30import android.view.LayoutInflater;
31import android.view.View;
32import android.view.ViewGroup;
33import android.widget.BaseAdapter;
34import android.widget.ImageView;
35import android.widget.TextView;
36
37import com.android.internal.app.AlertActivity;
38import com.android.internal.app.AlertController;
39import com.android.internal.telephony.SmsApplication;
40import com.android.internal.telephony.SmsApplication.SmsApplicationData;
41
42import java.util.ArrayList;
43import java.util.List;
44
45public final class SmsDefaultDialog extends AlertActivity implements
46        DialogInterface.OnClickListener {
47    private SmsApplicationData mNewSmsApplicationData;
48
49    @Override
50    protected void onCreate(Bundle savedInstanceState) {
51        super.onCreate(savedInstanceState);
52
53        Intent intent = getIntent();
54        String packageName = intent.getStringExtra(Intents.EXTRA_PACKAGE_NAME);
55
56        setResult(RESULT_CANCELED);
57        if (!buildDialog(packageName)) {
58            finish();
59        }
60    }
61
62    @Override
63    public void onClick(DialogInterface dialog, int which) {
64        switch (which) {
65            case BUTTON_POSITIVE:
66                SmsApplication.setDefaultApplication(mNewSmsApplicationData.mPackageName, this);
67                setResult(RESULT_OK);
68                break;
69            case BUTTON_NEGATIVE:
70                break;
71            default:
72                if (which >= 0) {
73                    AppListAdapter adapter = (AppListAdapter) mAlertParams.mAdapter;
74                    if (!adapter.isSelected(which)) {
75                        String packageName = adapter.getPackageName(which);
76                        if (!TextUtils.isEmpty(packageName)) {
77                            SmsApplication.setDefaultApplication(packageName, this);
78                            setResult(RESULT_OK);
79                        }
80                    }
81                }
82                break;
83        }
84    }
85
86    private boolean buildDialog(String packageName) {
87        TelephonyManager tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
88        if (!tm.isSmsCapable()) {
89            // No phone, no SMS
90            return false;
91        }
92        final AlertController.AlertParams p = mAlertParams;
93        p.mTitle = getString(R.string.sms_change_default_dialog_title);
94        mNewSmsApplicationData = SmsApplication.getSmsApplicationData(packageName, this);
95        if (mNewSmsApplicationData != null) {
96            // New default SMS app specified, change to that directly after the confirmation
97            // dialog.
98            SmsApplicationData oldSmsApplicationData = null;
99            ComponentName oldSmsComponent = SmsApplication.getDefaultSmsApplication(this, true);
100            if (oldSmsComponent != null) {
101                oldSmsApplicationData = SmsApplication.getSmsApplicationData(
102                        oldSmsComponent.getPackageName(), this);
103                if (oldSmsApplicationData.mPackageName.equals(
104                        mNewSmsApplicationData.mPackageName)) {
105                    return false;
106                }
107            }
108
109            // Compose dialog; get
110            if (oldSmsApplicationData != null) {
111                p.mMessage = getString(R.string.sms_change_default_dialog_text,
112                        mNewSmsApplicationData.getApplicationName(this),
113                        oldSmsApplicationData.getApplicationName(this));
114            } else {
115                p.mMessage = getString(R.string.sms_change_default_no_previous_dialog_text,
116                        mNewSmsApplicationData.getApplicationName(this));
117            }
118            p.mPositiveButtonText = getString(R.string.yes);
119            p.mNegativeButtonText = getString(R.string.no);
120            p.mPositiveButtonListener = this;
121            p.mNegativeButtonListener = this;
122        } else {
123            // No new default SMS app specified, show a list of all SMS apps and let user to pick
124            p.mAdapter = new AppListAdapter();
125            p.mOnClickListener = this;
126            p.mNegativeButtonText = getString(R.string.cancel);
127            p.mNegativeButtonListener = this;
128            if (p.mAdapter.isEmpty()) {
129                // If there is nothing to choose from, don't build the dialog.
130                return false;
131            }
132        }
133        setupAlert();
134
135        return true;
136    }
137
138    /**
139     * The list of SMS apps with label, icon. Current default SMS app is marked as "default".
140     */
141    private class AppListAdapter extends BaseAdapter {
142        /**
143         * SMS app item in the list
144         */
145        private class Item {
146            final String label;         // app label
147            final Drawable icon;        // app icon
148            final String packgeName;    // full app package name
149
150            public Item(String label, Drawable icon, String packageName) {
151                this.label = label;
152                this.icon = icon;
153                this.packgeName = packageName;
154            }
155        }
156
157        // The list
158        private final List<Item> mItems;
159        // The index of selected
160        private final int mSelectedIndex;
161
162        public AppListAdapter() {
163            mItems = getItems();
164            int selected = getSelectedIndex();
165            // Move selected up to the top so it is easy to find
166            if (selected > 0) {
167                Item item = mItems.remove(selected);
168                mItems.add(0, item);
169                selected = 0;
170            }
171            mSelectedIndex = selected;
172        }
173
174        @Override
175        public int getCount() {
176            return mItems != null ? mItems.size() : 0;
177        }
178
179        @Override
180        public Object getItem(int position) {
181            return mItems != null && position < mItems.size() ? mItems.get(position) : null;
182        }
183
184        @Override
185        public long getItemId(int position) {
186            return position;
187        }
188
189        @Override
190        public View getView(int position, View convertView, ViewGroup parent) {
191            Item item = ((Item) getItem(position));
192            LayoutInflater inflater = getLayoutInflater();
193            View view = inflater.inflate(R.layout.app_preference_item, parent, false);
194            TextView textView = (TextView) view.findViewById(android.R.id.title);
195            textView.setText(item.label);
196            if (position == mSelectedIndex) {
197                view.findViewById(R.id.default_label).setVisibility(View.VISIBLE);
198            } else {
199                view.findViewById(R.id.default_label).setVisibility(View.GONE);
200            }
201            ImageView imageView = (ImageView)view.findViewById(android.R.id.icon);
202            imageView.setImageDrawable(item.icon);
203            return view;
204        }
205
206        /**
207         * Get the selected package name by
208         *
209         * @param position the index of the item in the list
210         * @return the package name of selected item
211         */
212        public String getPackageName(int position) {
213            Item item = (Item) getItem(position);
214            if (item != null) {
215                return item.packgeName;
216            }
217            return null;
218        }
219
220        /**
221         * Check if an item at a position is already selected
222         *
223         * @param position the index of the item in the list
224         * @return true if the item at the position is already selected, false otherwise
225         */
226        public boolean isSelected(int position) {
227            return position == mSelectedIndex;
228        }
229
230        // Get the list items by looking for SMS apps
231        private List<Item> getItems() {
232            PackageManager pm = getPackageManager();
233            List<Item> items = new ArrayList<>();
234            for (SmsApplication.SmsApplicationData app :
235                    SmsApplication.getApplicationCollection(SmsDefaultDialog.this)) {
236                try {
237                    String packageName = app.mPackageName;
238                    ApplicationInfo appInfo = pm.getApplicationInfo(packageName, 0/*flags*/);
239                    if (appInfo != null) {
240                        items.add(new Item(
241                                appInfo.loadLabel(pm).toString(),
242                                appInfo.loadIcon(pm),
243                                packageName));
244                    }
245                } catch (PackageManager.NameNotFoundException e) {
246                    // Ignore package can't be found
247                }
248            }
249            return items;
250        }
251
252        // Get the selected item index by looking for the current default SMS app
253        private int getSelectedIndex() {
254            ComponentName appName = SmsApplication.getDefaultSmsApplication(
255                    SmsDefaultDialog.this, true);
256            if (appName != null) {
257                String defaultSmsAppPackageName = appName.getPackageName();
258                if (!TextUtils.isEmpty(defaultSmsAppPackageName)) {
259                    for (int i = 0; i < mItems.size(); i++) {
260                        if (TextUtils.equals(mItems.get(i).packgeName, defaultSmsAppPackageName)) {
261                            return i;
262                        }
263                    }
264                }
265            }
266            return -1;
267        }
268    }
269}
270