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 View mView;
  73     private TextView mEmptyView;
  74
  75     private final IntentFilter mIntentFilter;
  76
  77     // accessed from inner class (not private to avoid thunks)
  78     Preference mMyDevicePreference;
  79
  80     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
  81         @Override
  82         public void onReceive(Context context, Intent intent) {
  83             String action = intent.getAction();
  84             if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
  85                 updateDeviceName();
  86             }
  87         }
  88
  89         private void updateDeviceName() {
  90             if (mLocalAdapter.isEnabled() && mMyDevicePreference != null) {
  91                 mMyDevicePreference.setTitle(mLocalAdapter.getName());
  92             }
  93         }
  94     };
  95
  96     public BluetoothSettings() {
  97         mIntentFilter = new IntentFilter(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);
  98     }
  99
 100     @Override
 101     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 102             Bundle savedInstanceState) {
 103         mView = inflater.inflate(R.layout.custom_preference_list_fragment, container, false);
 104         return mView;
 105     }
 106
 107     @Override
 108     public void onActivityCreated(Bundle savedInstanceState) {
 109         super.onActivityCreated(savedInstanceState);
 110
 111         mEmptyView = (TextView) mView.findViewById(R.id.empty);
 112         getListView().setEmptyView(mEmptyView);
 113     }
 114
 115     @Override
 116     void addPreferencesForActivity() {
 117         addPreferencesFromResource(R.xml.bluetooth_settings);
 118
 119         Activity activity = getActivity();
 120
 121         Switch actionBarSwitch = new Switch(activity);
 122
 123         if (activity instanceof PreferenceActivity) {
 124             PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
 125             if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
 126                 final int padding = activity.getResources().getDimensionPixelSize(
 127                         R.dimen.action_bar_switch_padding);
 128                 actionBarSwitch.setPadding(0, 0, padding, 0);
 129                 activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
 130                         ActionBar.DISPLAY_SHOW_CUSTOM);
 131                 activity.getActionBar().setCustomView(actionBarSwitch, new ActionBar.LayoutParams(
 132                         ActionBar.LayoutParams.WRAP_CONTENT,
 133                         ActionBar.LayoutParams.WRAP_CONTENT,
 134                         Gravity.CENTER_VERTICAL | Gravity.RIGHT));
 135             }
 136         }
 137
 138         mBluetoothEnabler = new BluetoothEnabler(activity, actionBarSwitch);
 139
 140         setHasOptionsMenu(true);
 141     }
 142
 143     @Override
 144     public void onResume() {
 145         super.onResume();
 146
 147         mBluetoothEnabler.resume();
 148         if (mDiscoverableEnabler != null) {
 149             mDiscoverableEnabler.resume();
 150         }
 151         getActivity().registerReceiver(mReceiver, mIntentFilter);
 152
 153         updateContent(mLocalAdapter.getBluetoothState());
 154     }
 155
 156     @Override
 157     public void onPause() {
 158         super.onPause();
 159         mBluetoothEnabler.pause();
 160         getActivity().unregisterReceiver(mReceiver);
 161         if (mDiscoverableEnabler != null) {
 162             mDiscoverableEnabler.pause();
 163         }
 164     }
 165
 166     @Override
 167     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 168         boolean bluetoothIsEnabled = mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON;
 169         boolean isDiscovering = mLocalAdapter.isDiscovering();
 170         int textId = isDiscovering ? R.string.bluetooth_searching_for_devices :
 171             R.string.bluetooth_search_for_devices;
 172         menu.add(Menu.NONE, MENU_ID_SCAN, 0, textId)
 173                 .setEnabled(bluetoothIsEnabled && !isDiscovering)
 174                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
 175         menu.add(Menu.NONE, MENU_ID_RENAME_DEVICE, 0, R.string.bluetooth_rename_device)
 176                 .setEnabled(bluetoothIsEnabled)
 177                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 178         menu.add(Menu.NONE, MENU_ID_VISIBILITY_TIMEOUT, 0, R.string.bluetooth_visibility_timeout)
 179                 .setEnabled(bluetoothIsEnabled)
 180                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 181         menu.add(Menu.NONE, MENU_ID_SHOW_RECEIVED, 0, R.string.bluetooth_show_received_files)
 182                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 183     }
 184
 185     @Override
 186     public boolean onOptionsItemSelected(MenuItem item) {
 187         switch (item.getItemId()) {
 188             case MENU_ID_SCAN:
 189                 if (mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON) {
 190                     startScanning();
 191                 }
 192                 return true;
 193
 194             case MENU_ID_RENAME_DEVICE:
 195                 new BluetoothNameDialogFragment(mLocalAdapter).show(
 196                         getFragmentManager(), "rename device");
 197                 return true;
 198
 199             case MENU_ID_VISIBILITY_TIMEOUT:
 200                 new BluetoothVisibilityTimeoutFragment(mDiscoverableEnabler).show(
 201                         getFragmentManager(), "visibility timeout");
 202                 return true;
 203
 204             case MENU_ID_SHOW_RECEIVED:
 205                 Intent intent = new Intent(BTOPP_ACTION_OPEN_RECEIVED_FILES);
 206                 getActivity().sendBroadcast(intent);
 207                 return true;
 208         }
 209         return super.onOptionsItemSelected(item);
 210     }
 211
 212     private void startScanning() {
 213         if (!mAvailableDevicesCategoryIsPresent) {
 214             getPreferenceScreen().addPreference(mAvailableDevicesCategory);
 215         }
 216         mLocalAdapter.startScanning(true);
 217     }
 218
 219     @Override
 220     void onDevicePreferenceClick(BluetoothDevicePreference btPreference) {
 221         mLocalAdapter.stopScanning();
 222         super.onDevicePreferenceClick(btPreference);
 223     }
 224
 225     private void addDeviceCategory(PreferenceGroup preferenceGroup, int titleId,
 226             BluetoothDeviceFilter.Filter filter) {
 227         preferenceGroup.setTitle(titleId);
 228         getPreferenceScreen().addPreference(preferenceGroup);
 229         setFilter(filter);
 230         setDeviceListGroup(preferenceGroup);
 231         addCachedDevices();
 232         preferenceGroup.setEnabled(true);
 233     }
 234
 235     private void updateContent(int bluetoothState) {
 236         final PreferenceScreen preferenceScreen = getPreferenceScreen();
 237         int messageId = 0;
 238
 239         switch (bluetoothState) {
 240             case BluetoothAdapter.STATE_ON:
 241                 preferenceScreen.removeAll();
 242                 preferenceScreen.setOrderingAsAdded(true);
 243
 244                 // This device
 245                 if (mMyDevicePreference == null) {
 246                     mMyDevicePreference = new Preference(getActivity());
 247                 }
 248                 mMyDevicePreference.setTitle(mLocalAdapter.getName());
 249                 mMyDevicePreference.setPersistent(false);
 250                 mMyDevicePreference.setEnabled(true);
 251                 preferenceScreen.addPreference(mMyDevicePreference);
 252
 253                 if (mDiscoverableEnabler == null) {
 254                     mDiscoverableEnabler = new BluetoothDiscoverableEnabler(getActivity(),
 255                             mLocalAdapter, mMyDevicePreference);
 256                     mDiscoverableEnabler.resume();
 257                 }
 258
 259                 // Paired devices category
 260                 if (mPairedDevicesCategory == null) {
 261                     mPairedDevicesCategory = new PreferenceCategory(getActivity());
 262                 } else {
 263                     mPairedDevicesCategory.removeAll();
 264                 }
 265                 addDeviceCategory(mPairedDevicesCategory,
 266                         R.string.bluetooth_preference_paired_devices,
 267                         BluetoothDeviceFilter.BONDED_DEVICE_FILTER);
 268                 int numberOfPairedDevices = mPairedDevicesCategory.getPreferenceCount();
 269
 270                 mDiscoverableEnabler.setNumberOfPairedDevices(numberOfPairedDevices);
 271
 272                 // Available devices category
 273                 if (mAvailableDevicesCategory == null) {
 274                     mAvailableDevicesCategory = new ProgressCategory(getActivity(), null);
 275                 } else {
 276                     mAvailableDevicesCategory.removeAll();
 277                 }
 278                 addDeviceCategory(mAvailableDevicesCategory,
 279                         R.string.bluetooth_preference_found_devices,
 280                         BluetoothDeviceFilter.UNBONDED_DEVICE_FILTER);
 281                 int numberOfAvailableDevices = mAvailableDevicesCategory.getPreferenceCount();
 282                 mAvailableDevicesCategoryIsPresent = true;
 283
 284                 if (numberOfAvailableDevices == 0) {
 285                     preferenceScreen.removePreference(mAvailableDevicesCategory);
 286                     mAvailableDevicesCategoryIsPresent = false;
 287                 }
 288
 289                 if (numberOfPairedDevices == 0) {
 290                     preferenceScreen.removePreference(mPairedDevicesCategory);
 291                     startScanning();
 292                 }
 293                 getActivity().invalidateOptionsMenu();
 294                 return; // not break
 295
 296             case BluetoothAdapter.STATE_TURNING_OFF:
 297                 messageId = R.string.bluetooth_turning_off;
 298                 break;
 299
 300             case BluetoothAdapter.STATE_OFF:
 301                 messageId = R.string.bluetooth_empty_list_bluetooth_off;
 302                 break;
 303
 304             case BluetoothAdapter.STATE_TURNING_ON:
 305                 messageId = R.string.bluetooth_turning_on;
 306                 break;
 307         }
 308
 309         setDeviceListGroup(preferenceScreen);
 310         removeAllDevices();
 311         mEmptyView.setText(messageId);
 312         getActivity().invalidateOptionsMenu();
 313     }
 314
 315     @Override
 316     public void onBluetoothStateChanged(int bluetoothState) {
 317         super.onBluetoothStateChanged(bluetoothState);
 318         updateContent(bluetoothState);
 319     }
 320
 321     @Override
 322     public void onScanningStateChanged(boolean started) {
 323         super.onScanningStateChanged(started);
 324         // Update options' enabled state
 325         getActivity().invalidateOptionsMenu();
 326     }
 327
 328     public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
 329         setDeviceListGroup(getPreferenceScreen());
 330         removeAllDevices();
 331         updateContent(mLocalAdapter.getBluetoothState());
 332     }
 333
 334     private final View.OnClickListener mDeviceProfilesListener = new View.OnClickListener() {
 335         public void onClick(View v) {
 336             // User clicked on advanced options icon for a device in the list
 337             if (v.getTag() instanceof CachedBluetoothDevice) {
 338                 CachedBluetoothDevice device = (CachedBluetoothDevice) v.getTag();
 339
 340                 Preference pref = new Preference(getActivity());
 341                 pref.setTitle(device.getName());
 342                 pref.setFragment(DeviceProfilesSettings.class.getName());
 343                 pref.getExtras().putParcelable(DeviceProfilesSettings.EXTRA_DEVICE,
 344                         device.getDevice());
 345                 ((PreferenceActivity) getActivity()).onPreferenceStartFragment(
 346                         BluetoothSettings.this, pref);
 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 }