src/com/android/settings/bluetooth/BluetoothSettings.java

   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
  17 package com.android.settings.bluetooth;
  18
  19 import android.app.ActionBar;
  20 import android.app.Activity;
  21 import android.bluetooth.BluetoothAdapter;
  22 import android.bluetooth.BluetoothDevice;
  23 import android.content.BroadcastReceiver;
  24 import android.content.Context;
  25 import android.content.Intent;
  26 import android.content.IntentFilter;
  27 import android.os.Bundle;
  28 import android.preference.Preference;
  29 import android.preference.PreferenceActivity;
  30 import android.preference.PreferenceCategory;
  31 import android.preference.PreferenceGroup;
  32 import android.preference.PreferenceScreen;
  33 import android.util.Log;
  34 import android.view.Gravity;
  35 import android.view.LayoutInflater;
  36 import android.view.Menu;
  37 import android.view.MenuInflater;
  38 import android.view.MenuItem;
  39 import android.view.View;
  40 import android.view.ViewGroup;
  41 import android.widget.Switch;
  42 import android.widget.TextView;
  43
  44 import com.android.settings.ProgressCategory;
  45 import com.android.settings.R;
  46
  47 /**
  48  * BluetoothSettings is the Settings screen for Bluetooth configuration and
  49  * connection management.
  50  */
  51 public final class BluetoothSettings extends DeviceListPreferenceFragment {
  52     private static final String TAG = "BluetoothSettings";
  53
  54     private static final int MENU_ID_SCAN = Menu.FIRST;
  55     private static final int MENU_ID_RENAME_DEVICE = Menu.FIRST + 1;
  56     private static final int MENU_ID_VISIBILITY_TIMEOUT = Menu.FIRST + 2;
  57     private static final int MENU_ID_SHOW_RECEIVED = Menu.FIRST + 3;
  58
  59     /* Private intent to show the list of received files */
  60     private static final String BTOPP_ACTION_OPEN_RECEIVED_FILES =
  61             "android.btopp.intent.action.OPEN_RECEIVED_FILES";
  62
  63     private BluetoothEnabler mBluetoothEnabler;
  64
  65     private BluetoothDiscoverableEnabler mDiscoverableEnabler;
  66
  67     private PreferenceGroup mPairedDevicesCategory;
  68
  69     private PreferenceGroup mAvailableDevicesCategory;
  70     private boolean mAvailableDevicesCategoryIsPresent;
  71
  72     private TextView mEmptyView;
  73
  74     private final IntentFilter mIntentFilter;
  75
  76     // accessed from inner class (not private to avoid thunks)
  77     Preference mMyDevicePreference;
  78
  79     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
  80         @Override
  81         public void onReceive(Context context, Intent intent) {
  82             String action = intent.getAction();
  83             if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
  84                 updateDeviceName();
  85             }
  86         }
  87
  88         private void updateDeviceName() {
  89             if (mLocalAdapter.isEnabled() && mMyDevicePreference != null) {
  90                 mMyDevicePreference.setTitle(mLocalAdapter.getName());
  91             }
  92         }
  93     };
  94
  95     public BluetoothSettings() {
  96         mIntentFilter = new IntentFilter(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);
  97     }
  98
  99     @Override
 100     public void onActivityCreated(Bundle savedInstanceState) {
 101         super.onActivityCreated(savedInstanceState);
 102
 103         mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
 104         getListView().setEmptyView(mEmptyView);
 105     }
 106
 107     @Override
 108     void addPreferencesForActivity() {
 109         addPreferencesFromResource(R.xml.bluetooth_settings);
 110
 111         Activity activity = getActivity();
 112
 113         Switch actionBarSwitch = new Switch(activity);
 114
 115         if (activity instanceof PreferenceActivity) {
 116             PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
 117             if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
 118                 final int padding = activity.getResources().getDimensionPixelSize(
 119                         R.dimen.action_bar_switch_padding);
 120                 actionBarSwitch.setPadding(0, 0, padding, 0);
 121                 activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
 122                         ActionBar.DISPLAY_SHOW_CUSTOM);
 123                 activity.getActionBar().setCustomView(actionBarSwitch, new ActionBar.LayoutParams(
 124                         ActionBar.LayoutParams.WRAP_CONTENT,
 125                         ActionBar.LayoutParams.WRAP_CONTENT,
 126                         Gravity.CENTER_VERTICAL | Gravity.RIGHT));
 127             }
 128         }
 129
 130         mBluetoothEnabler = new BluetoothEnabler(activity, actionBarSwitch);
 131
 132         setHasOptionsMenu(true);
 133     }
 134
 135     @Override
 136     public void onResume() {
 137         // resume BluetoothEnabler before calling super.onResume() so we don't get
 138         // any onDeviceAdded() callbacks before setting up view in updateContent()
 139         mBluetoothEnabler.resume();
 140         super.onResume();
 141
 142         if (mDiscoverableEnabler != null) {
 143             mDiscoverableEnabler.resume();
 144         }
 145         getActivity().registerReceiver(mReceiver, mIntentFilter);
 146
 147         updateContent(mLocalAdapter.getBluetoothState());
 148     }
 149
 150     @Override
 151     public void onPause() {
 152         super.onPause();
 153         mBluetoothEnabler.pause();
 154         getActivity().unregisterReceiver(mReceiver);
 155         if (mDiscoverableEnabler != null) {
 156             mDiscoverableEnabler.pause();
 157         }
 158     }
 159
 160     @Override
 161     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 162         boolean bluetoothIsEnabled = mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON;
 163         boolean isDiscovering = mLocalAdapter.isDiscovering();
 164         int textId = isDiscovering ? R.string.bluetooth_searching_for_devices :
 165             R.string.bluetooth_search_for_devices;
 166         menu.add(Menu.NONE, MENU_ID_SCAN, 0, textId)
 167                 .setEnabled(bluetoothIsEnabled && !isDiscovering)
 168                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
 169         menu.add(Menu.NONE, MENU_ID_RENAME_DEVICE, 0, R.string.bluetooth_rename_device)
 170                 .setEnabled(bluetoothIsEnabled)
 171                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 172         menu.add(Menu.NONE, MENU_ID_VISIBILITY_TIMEOUT, 0, R.string.bluetooth_visibility_timeout)
 173                 .setEnabled(bluetoothIsEnabled)
 174                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 175         menu.add(Menu.NONE, MENU_ID_SHOW_RECEIVED, 0, R.string.bluetooth_show_received_files)
 176                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 177     }
 178
 179     @Override
 180     public boolean onOptionsItemSelected(MenuItem item) {
 181         switch (item.getItemId()) {
 182             case MENU_ID_SCAN:
 183                 if (mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON) {
 184                     startScanning();
 185                 }
 186                 return true;
 187
 188             case MENU_ID_RENAME_DEVICE:
 189                 new BluetoothNameDialogFragment().show(
 190                         getFragmentManager(), "rename device");
 191                 return true;
 192
 193             case MENU_ID_VISIBILITY_TIMEOUT:
 194                 new BluetoothVisibilityTimeoutFragment().show(
 195                         getFragmentManager(), "visibility timeout");
 196                 return true;
 197
 198             case MENU_ID_SHOW_RECEIVED:
 199                 Intent intent = new Intent(BTOPP_ACTION_OPEN_RECEIVED_FILES);
 200                 getActivity().sendBroadcast(intent);
 201                 return true;
 202         }
 203         return super.onOptionsItemSelected(item);
 204     }
 205
 206     private void startScanning() {
 207         if (!mAvailableDevicesCategoryIsPresent) {
 208             getPreferenceScreen().addPreference(mAvailableDevicesCategory);
 209         }
 210         mLocalAdapter.startScanning(true);
 211     }
 212
 213     @Override
 214     void onDevicePreferenceClick(BluetoothDevicePreference btPreference) {
 215         mLocalAdapter.stopScanning();
 216         super.onDevicePreferenceClick(btPreference);
 217     }
 218
 219     private void addDeviceCategory(PreferenceGroup preferenceGroup, int titleId,
 220             BluetoothDeviceFilter.Filter filter) {
 221         preferenceGroup.setTitle(titleId);
 222         getPreferenceScreen().addPreference(preferenceGroup);
 223         setFilter(filter);
 224         setDeviceListGroup(preferenceGroup);
 225         addCachedDevices();
 226         preferenceGroup.setEnabled(true);
 227     }
 228
 229     private void updateContent(int bluetoothState) {
 230         final PreferenceScreen preferenceScreen = getPreferenceScreen();
 231         int messageId = 0;
 232
 233         switch (bluetoothState) {
 234             case BluetoothAdapter.STATE_ON:
 235                 preferenceScreen.removeAll();
 236                 preferenceScreen.setOrderingAsAdded(true);
 237
 238                 // This device
 239                 if (mMyDevicePreference == null) {
 240                     mMyDevicePreference = new Preference(getActivity());
 241                 }
 242                 mMyDevicePreference.setTitle(mLocalAdapter.getName());
 243                 if (getResources().getBoolean(com.android.internal.R.bool.config_voice_capable)) {
 244                     mMyDevicePreference.setIcon(R.drawable.ic_bt_cellphone);    // for phones
 245                 } else {
 246                     mMyDevicePreference.setIcon(R.drawable.ic_bt_laptop);   // for tablets, etc.
 247                 }
 248                 mMyDevicePreference.setPersistent(false);
 249                 mMyDevicePreference.setEnabled(true);
 250                 preferenceScreen.addPreference(mMyDevicePreference);
 251
 252                 if (mDiscoverableEnabler == null) {
 253                     mDiscoverableEnabler = new BluetoothDiscoverableEnabler(getActivity(),
 254                             mLocalAdapter, mMyDevicePreference);
 255                     mDiscoverableEnabler.resume();
 256                     LocalBluetoothManager.getInstance(getActivity()).setDiscoverableEnabler(
 257                             mDiscoverableEnabler);
 258                 }
 259
 260                 // Paired devices category
 261                 if (mPairedDevicesCategory == null) {
 262                     mPairedDevicesCategory = new PreferenceCategory(getActivity());
 263                 } else {
 264                     mPairedDevicesCategory.removeAll();
 265                 }
 266                 addDeviceCategory(mPairedDevicesCategory,
 267                         R.string.bluetooth_preference_paired_devices,
 268                         BluetoothDeviceFilter.BONDED_DEVICE_FILTER);
 269                 int numberOfPairedDevices = mPairedDevicesCategory.getPreferenceCount();
 270
 271                 mDiscoverableEnabler.setNumberOfPairedDevices(numberOfPairedDevices);
 272
 273                 // Available devices category
 274                 if (mAvailableDevicesCategory == null) {
 275                     mAvailableDevicesCategory = new ProgressCategory(getActivity(), null);
 276                 } else {
 277                     mAvailableDevicesCategory.removeAll();
 278                 }
 279                 addDeviceCategory(mAvailableDevicesCategory,
 280                         R.string.bluetooth_preference_found_devices,
 281                         BluetoothDeviceFilter.UNBONDED_DEVICE_FILTER);
 282                 int numberOfAvailableDevices = mAvailableDevicesCategory.getPreferenceCount();
 283                 mAvailableDevicesCategoryIsPresent = true;
 284
 285                 if (numberOfAvailableDevices == 0) {
 286                     preferenceScreen.removePreference(mAvailableDevicesCategory);
 287                     mAvailableDevicesCategoryIsPresent = false;
 288                 }
 289
 290                 if (numberOfPairedDevices == 0) {
 291                     preferenceScreen.removePreference(mPairedDevicesCategory);
 292                     startScanning();
 293                 }
 294                 getActivity().invalidateOptionsMenu();
 295                 return; // not break
 296
 297             case BluetoothAdapter.STATE_TURNING_OFF:
 298                 messageId = R.string.bluetooth_turning_off;
 299                 break;
 300
 301             case BluetoothAdapter.STATE_OFF:
 302                 messageId = R.string.bluetooth_empty_list_bluetooth_off;
 303                 break;
 304
 305             case BluetoothAdapter.STATE_TURNING_ON:
 306                 messageId = R.string.bluetooth_turning_on;
 307                 break;
 308         }
 309
 310         setDeviceListGroup(preferenceScreen);
 311         removeAllDevices();
 312         mEmptyView.setText(messageId);
 313         getActivity().invalidateOptionsMenu();
 314     }
 315
 316     @Override
 317     public void onBluetoothStateChanged(int bluetoothState) {
 318         super.onBluetoothStateChanged(bluetoothState);
 319         updateContent(bluetoothState);
 320     }
 321
 322     @Override
 323     public void onScanningStateChanged(boolean started) {
 324         super.onScanningStateChanged(started);
 325         // Update options' enabled state
 326         getActivity().invalidateOptionsMenu();
 327     }
 328
 329     public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
 330         setDeviceListGroup(getPreferenceScreen());
 331         removeAllDevices();
 332         updateContent(mLocalAdapter.getBluetoothState());
 333     }
 334
 335     private final View.OnClickListener mDeviceProfilesListener = new View.OnClickListener() {
 336         public void onClick(View v) {
 337             // User clicked on advanced options icon for a device in the list
 338             if (v.getTag() instanceof CachedBluetoothDevice) {
 339                 CachedBluetoothDevice device = (CachedBluetoothDevice) v.getTag();
 340
 341                 Bundle args = new Bundle(1);
 342                 args.putParcelable(DeviceProfilesSettings.EXTRA_DEVICE, device.getDevice());
 343
 344                 ((PreferenceActivity) getActivity()).startPreferencePanel(
 345                         DeviceProfilesSettings.class.getName(), args,
 346                         R.string.bluetooth_device_advanced_title, null, null, 0);
 347             } else {
 348                 Log.w(TAG, "onClick() called for other View: " + v); // TODO remove
 349             }
 350         }
 351     };
 352
 353     /**
 354      * Add a listener, which enables the advanced settings icon.
 355      * @param preference the newly added preference
 356      */
 357     @Override
 358     void initDevicePreference(BluetoothDevicePreference preference) {
 359         CachedBluetoothDevice cachedDevice = preference.getCachedDevice();
 360         if (cachedDevice.getBondState() == BluetoothDevice.BOND_BONDED) {
 361             // Only paired device have an associated advanced settings screen
 362             preference.setOnSettingsClickListener(mDeviceProfilesListener);
 363         }
 364     }
 365 }