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.preference.Preference;
  24 import android.preference.PreferenceActivity;
  25 import android.preference.PreferenceGroup;
  26 import android.preference.PreferenceScreen;
  27 import android.util.Log;
  28 import android.view.Gravity;
  29 import android.view.Menu;
  30 import android.view.MenuInflater;
  31 import android.view.MenuItem;
  32 import android.view.View;
  33 import android.widget.Switch;
  34
  35 import com.android.settings.ProgressCategory;
  36 import com.android.settings.R;
  37
  38 /**
  39  * BluetoothSettings is the Settings screen for Bluetooth configuration and
  40  * connection management.
  41  */
  42 public final class BluetoothSettings extends DeviceListPreferenceFragment {
  43     private static final String TAG = "BluetoothSettings";
  44
  45     private static final int MENU_ID_SCAN = Menu.FIRST;
  46     private static final int MENU_ID_ADVANCED = Menu.FIRST + 1;
  47
  48     private BluetoothEnabler mBluetoothEnabler;
  49
  50     private PreferenceGroup mFoundDevicesCategory;
  51     private boolean mFoundDevicesCategoryIsPresent;
  52
  53     @Override
  54     void addPreferencesForActivity() {
  55         addPreferencesFromResource(R.xml.bluetooth_settings);
  56
  57         Activity activity = getActivity();
  58
  59         Switch actionBarSwitch = new Switch(activity);
  60
  61         if (activity instanceof PreferenceActivity) {
  62             PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
  63             if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
  64                 final int padding = activity.getResources().getDimensionPixelSize(
  65                         R.dimen.action_bar_switch_padding);
  66                 actionBarSwitch.setPadding(0, 0, padding, 0);
  67                 activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
  68                         ActionBar.DISPLAY_SHOW_CUSTOM);
  69                 activity.getActionBar().setCustomView(actionBarSwitch, new ActionBar.LayoutParams(
  70                         ActionBar.LayoutParams.WRAP_CONTENT,
  71                         ActionBar.LayoutParams.WRAP_CONTENT,
  72                         Gravity.CENTER_VERTICAL | Gravity.RIGHT));
  73             }
  74         }
  75
  76         mBluetoothEnabler = new BluetoothEnabler(activity, actionBarSwitch);
  77
  78         if (mLocalAdapter != null && mLocalAdapter.isEnabled()) {
  79             activity.getActionBar().setSubtitle(mLocalAdapter.getName());
  80         }
  81
  82         setHasOptionsMenu(true);
  83     }
  84
  85     @Override
  86     public void onResume() {
  87         super.onResume();
  88
  89         mBluetoothEnabler.resume();
  90
  91         updateContent(mLocalAdapter.getBluetoothState());
  92     }
  93
  94     @Override
  95     public void onPause() {
  96         super.onPause();
  97
  98         mBluetoothEnabler.pause();
  99     }
 100
 101     @Override
 102     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 103         boolean bluetoothIsEnabled = mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON;
 104         menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.bluetooth_scan_nearby_devices)
 105                 //.setIcon(R.drawable.ic_menu_scan_network)
 106                 .setEnabled(bluetoothIsEnabled && !mLocalAdapter.isDiscovering())
 107                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
 108         menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.bluetooth_menu_advanced)
 109                 //.setIcon(android.R.drawable.ic_menu_manage)
 110                 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
 111     }
 112
 113     @Override
 114     public boolean onOptionsItemSelected(MenuItem item) {
 115         switch (item.getItemId()) {
 116             case MENU_ID_SCAN:
 117                 if (mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON) {
 118                     startScanning();
 119                 }
 120                 return true;
 121             case MENU_ID_ADVANCED:
 122                 if (getActivity() instanceof PreferenceActivity) {
 123                     ((PreferenceActivity) getActivity()).startPreferencePanel(
 124                             AdvancedBluetoothSettings.class.getCanonicalName(),
 125                             null,
 126                             R.string.bluetooth_advanced_titlebar, null,
 127                             this, 0);
 128                 } else {
 129                     startFragment(this, AdvancedBluetoothSettings.class.getCanonicalName(), -1, null);
 130                 }
 131                 return true;
 132         }
 133         return super.onOptionsItemSelected(item);
 134     }
 135
 136     private void startScanning() {
 137         if (!mFoundDevicesCategoryIsPresent) {
 138             getPreferenceScreen().addPreference(mFoundDevicesCategory);
 139         }
 140         mLocalAdapter.startScanning(true);
 141     }
 142
 143     @Override
 144     void onDevicePreferenceClick(BluetoothDevicePreference btPreference) {
 145         mLocalAdapter.stopScanning();
 146         super.onDevicePreferenceClick(btPreference);
 147     }
 148
 149     private void updateContent(int bluetoothState) {
 150         final PreferenceScreen preferenceScreen = getPreferenceScreen();
 151         getActivity().invalidateOptionsMenu();
 152         int messageId = 0;
 153
 154         switch (bluetoothState) {
 155             case BluetoothAdapter.STATE_ON:
 156                 preferenceScreen.removeAll();
 157
 158                 // Add bonded devices from cache first
 159                 setFilter(BluetoothDeviceFilter.BONDED_DEVICE_FILTER);
 160                 setDeviceListGroup(preferenceScreen);
 161                 preferenceScreen.setOrderingAsAdded(true);
 162
 163                 addCachedDevices();
 164                 int numberOfPairedDevices = preferenceScreen.getPreferenceCount();
 165
 166                 // Found devices category
 167                 mFoundDevicesCategory = new ProgressCategory(getActivity(), null);
 168                 mFoundDevicesCategory.setTitle(R.string.bluetooth_preference_found_devices);
 169                 preferenceScreen.addPreference(mFoundDevicesCategory);
 170                 mFoundDevicesCategoryIsPresent = true;
 171
 172                 // Unbonded found devices from cache
 173                 setFilter(BluetoothDeviceFilter.UNBONDED_DEVICE_FILTER);
 174                 setDeviceListGroup(mFoundDevicesCategory);
 175                 addCachedDevices();
 176
 177                 int numberOfUnpairedDevices = mFoundDevicesCategory.getPreferenceCount();
 178                 if (numberOfUnpairedDevices == 0) {
 179                     preferenceScreen.removePreference(mFoundDevicesCategory);
 180                     mFoundDevicesCategoryIsPresent = false;
 181                 }
 182
 183                 if (numberOfPairedDevices == 0) startScanning();
 184
 185                 return;
 186
 187             case BluetoothAdapter.STATE_TURNING_OFF:
 188                 int preferenceCount = preferenceScreen.getPreferenceCount();
 189                 for (int i = 0; i < preferenceCount; i++) {
 190                     preferenceScreen.getPreference(i).setEnabled(false);
 191                 }
 192                 return;
 193
 194             case BluetoothAdapter.STATE_OFF:
 195                 messageId = R.string.bluetooth_empty_list_bluetooth_off;
 196                 break;
 197
 198             case BluetoothAdapter.STATE_TURNING_ON:
 199                 messageId = R.string.bluetooth_turning_on;
 200                 break;
 201         }
 202
 203         setDeviceListGroup(preferenceScreen);
 204         removeAllDevices();
 205
 206         // TODO: from xml, add top padding. Same as in wifi
 207         Preference emptyListPreference = new Preference(getActivity());
 208         emptyListPreference.setTitle(messageId);
 209         preferenceScreen.addPreference(emptyListPreference);
 210     }
 211
 212     @Override
 213     public void onBluetoothStateChanged(int bluetoothState) {
 214         super.onBluetoothStateChanged(bluetoothState);
 215         updateContent(bluetoothState);
 216     }
 217
 218     @Override
 219     public void onScanningStateChanged(boolean started) {
 220         super.onScanningStateChanged(started);
 221         // Update 'Scan' option enabled state
 222         getActivity().invalidateOptionsMenu();
 223     }
 224
 225     public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
 226         setDeviceListGroup(getPreferenceScreen());
 227         removeAllDevices();
 228         updateContent(mLocalAdapter.getBluetoothState());
 229     }
 230
 231     private final View.OnClickListener mDeviceProfilesListener = new View.OnClickListener() {
 232         public void onClick(View v) {
 233             // User clicked on advanced options icon for a device in the list
 234             if (v.getTag() instanceof CachedBluetoothDevice) {
 235                 CachedBluetoothDevice device = (CachedBluetoothDevice) v.getTag();
 236
 237                 Preference pref = new Preference(getActivity());
 238                 pref.setTitle(device.getName());
 239                 pref.setFragment(DeviceProfilesSettings.class.getName());
 240                 pref.getExtras().putParcelable(DeviceProfilesSettings.EXTRA_DEVICE,
 241                         device.getDevice());
 242                 ((PreferenceActivity) getActivity()).onPreferenceStartFragment(
 243                         BluetoothSettings.this, pref);
 244             } else {
 245                 Log.w(TAG, "onClick() called for other View: " + v); // TODO remove
 246             }
 247         }
 248     };
 249
 250     /**
 251      * Add a listener, which enables the advanced settings icon.
 252      * @param preference the newly added preference
 253      */
 254     @Override
 255     void initDevicePreference(BluetoothDevicePreference preference) {
 256         CachedBluetoothDevice cachedDevice = preference.getCachedDevice();
 257         if (cachedDevice.getBondState() == BluetoothDevice.BOND_BONDED) {
 258             // Only paired device have an associated advanced settings screen
 259             preference.setOnSettingsClickListener(mDeviceProfilesListener);
 260         }
 261     }
 262 }