/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.bluetooth;
import android.app.AlertDialog;
import android.bluetooth.BluetoothClass;
import android.bluetooth.BluetoothDevice;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.Resources;
import android.os.UserManager;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceViewHolder;
import android.text.Html;
import android.text.TextUtils;
import android.util.Log;
import android.util.Pair;
import android.util.TypedValue;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import com.android.settings.R;
import com.android.settings.search.Index;
import com.android.settings.search.SearchIndexableRaw;
import com.android.settingslib.bluetooth.CachedBluetoothDevice;
import com.android.settingslib.bluetooth.HidProfile;
import com.android.settingslib.bluetooth.LocalBluetoothProfile;
import java.util.List;
import static android.os.UserManager.DISALLOW_CONFIG_BLUETOOTH;
/**
* BluetoothDevicePreference is the preference type used to display each remote
* Bluetooth device in the Bluetooth Settings screen.
*/
public final class BluetoothDevicePreference extends Preference implements
CachedBluetoothDevice.Callback, OnClickListener {
private static final String TAG = "BluetoothDevicePreference";
private static int sDimAlpha = Integer.MIN_VALUE;
private final CachedBluetoothDevice mCachedDevice;
private OnClickListener mOnSettingsClickListener;
private AlertDialog mDisconnectDialog;
private String contentDescription = null;
/* Talk-back descriptions for various BT icons */
Resources r = getContext().getResources();
public final String COMPUTER = r.getString(R.string.bluetooth_talkback_computer);
public final String INPUT_PERIPHERAL = r.getString(
R.string.bluetooth_talkback_input_peripheral);
public final String HEADSET = r.getString(R.string.bluetooth_talkback_headset);
public final String PHONE = r.getString(R.string.bluetooth_talkback_phone);
public final String IMAGING = r.getString(R.string.bluetooth_talkback_imaging);
public final String HEADPHONE = r.getString(R.string.bluetooth_talkback_headphone);
public final String BLUETOOTH = r.getString(R.string.bluetooth_talkback_bluetooth);
public BluetoothDevicePreference(Context context, CachedBluetoothDevice cachedDevice) {
super(context);
if (sDimAlpha == Integer.MIN_VALUE) {
TypedValue outValue = new TypedValue();
context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, outValue, true);
sDimAlpha = (int) (outValue.getFloat() * 255);
}
mCachedDevice = cachedDevice;
setLayoutResource(R.layout.preference_bt_icon);
if (cachedDevice.getBondState() == BluetoothDevice.BOND_BONDED) {
UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE);
if (! um.hasUserRestriction(DISALLOW_CONFIG_BLUETOOTH)) {
setWidgetLayoutResource(R.layout.preference_bluetooth);
}
}
mCachedDevice.registerCallback(this);
onDeviceAttributesChanged();
}
void rebind() {
notifyChanged();
}
CachedBluetoothDevice getCachedDevice() {
return mCachedDevice;
}
public void setOnSettingsClickListener(OnClickListener listener) {
mOnSettingsClickListener = listener;
}
@Override
protected void onPrepareForRemoval() {
super.onPrepareForRemoval();
mCachedDevice.unregisterCallback(this);
if (mDisconnectDialog != null) {
mDisconnectDialog.dismiss();
mDisconnectDialog = null;
}
}
public void onDeviceAttributesChanged() {
/*
* The preference framework takes care of making sure the value has
* changed before proceeding. It will also call notifyChanged() if
* any preference info has changed from the previous value.
*/
setTitle(mCachedDevice.getName());
int summaryResId = mCachedDevice.getConnectionSummary();
if (summaryResId != 0) {
setSummary(summaryResId);
} else {
setSummary(null); // empty summary for unpaired devices
}
Pair<Integer, String> pair = getBtClassDrawableWithDescription();
if (pair.first != 0) {
setIcon(pair.first);
contentDescription = pair.second;
}
// Used to gray out the item
setEnabled(!mCachedDevice.isBusy());
// This could affect ordering, so notify that
notifyHierarchyChanged();
}
@Override
public void onBindViewHolder(PreferenceViewHolder view) {
// Disable this view if the bluetooth enable/disable preference view is off
if (null != findPreferenceInHierarchy("bt_checkbox")) {
setDependency("bt_checkbox");
}
if (mCachedDevice.getBondState() == BluetoothDevice.BOND_BONDED) {
ImageView deviceDetails = (ImageView) view.findViewById(R.id.deviceDetails);
if (deviceDetails != null) {
deviceDetails.setOnClickListener(this);
deviceDetails.setTag(mCachedDevice);
}
}
final ImageView imageView = (ImageView) view.findViewById(android.R.id.icon);
if (imageView != null) {
imageView.setContentDescription(contentDescription);
}
super.onBindViewHolder(view);
}
public void onClick(View v) {
// Should never be null by construction
if (mOnSettingsClickListener != null) {
mOnSettingsClickListener.onClick(v);
}
}
@Override
public boolean equals(Object o) {
if ((o == null) || !(o instanceof BluetoothDevicePreference)) {
return false;
}
return mCachedDevice.equals(
((BluetoothDevicePreference) o).mCachedDevice);
}
@Override
public int hashCode() {
return mCachedDevice.hashCode();
}
@Override
public int compareTo(Preference another) {
if (!(another instanceof BluetoothDevicePreference)) {
// Rely on default sort
return super.compareTo(another);
}
return mCachedDevice
.compareTo(((BluetoothDevicePreference) another).mCachedDevice);
}
void onClicked() {
int bondState = mCachedDevice.getBondState();
if (mCachedDevice.isConnected()) {
askDisconnect();
} else if (bondState == BluetoothDevice.BOND_BONDED) {
mCachedDevice.connect(true);
} else if (bondState == BluetoothDevice.BOND_NONE) {
pair();
}
}
// Show disconnect confirmation dialog for a device.
private void askDisconnect() {
Context context = getContext();
String name = mCachedDevice.getName();
if (TextUtils.isEmpty(name)) {
name = context.getString(R.string.bluetooth_device);
}
String message = context.getString(R.string.bluetooth_disconnect_all_profiles, name);
String title = context.getString(R.string.bluetooth_disconnect_title);
DialogInterface.OnClickListener disconnectListener = new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
mCachedDevice.disconnect();
}
};
mDisconnectDialog = Utils.showDisconnectDialog(context,
mDisconnectDialog, disconnectListener, title, Html.fromHtml(message));
}
private void pair() {
if (!mCachedDevice.startPairing()) {
Utils.showError(getContext(), mCachedDevice.getName(),
R.string.bluetooth_pairing_error_message);
} else {
final Context context = getContext();
SearchIndexableRaw data = new SearchIndexableRaw(context);
data.className = BluetoothSettings.class.getName();
data.title = mCachedDevice.getName();
data.screenTitle = context.getResources().getString(R.string.bluetooth_settings);
data.iconResId = R.drawable.ic_settings_bluetooth;
data.enabled = true;
Index.getInstance(context).updateFromSearchIndexableData(data);
}
}
private Pair<Integer, String> getBtClassDrawableWithDescription() {
BluetoothClass btClass = mCachedDevice.getBtClass();
if (btClass != null) {
switch (btClass.getMajorDeviceClass()) {
case BluetoothClass.Device.Major.COMPUTER:
return new Pair<Integer, String>(R.drawable.ic_bt_laptop, COMPUTER);
case BluetoothClass.Device.Major.PHONE:
return new Pair<Integer, String>(R.drawable.ic_bt_cellphone, PHONE);
case BluetoothClass.Device.Major.PERIPHERAL:
return new Pair<Integer, String>(HidProfile.getHidClassDrawable(btClass),
INPUT_PERIPHERAL);
case BluetoothClass.Device.Major.IMAGING:
return new Pair<Integer, String>(R.drawable.ic_bt_imaging, IMAGING);
default:
// unrecognized device class; continue
}
} else {
Log.w(TAG, "mBtClass is null");
}
List<LocalBluetoothProfile> profiles = mCachedDevice.getProfiles();
for (LocalBluetoothProfile profile : profiles) {
int resId = profile.getDrawableResource(btClass);
if (resId != 0) {
return new Pair<Integer, String>(resId, null);
}
}
if (btClass != null) {
if (btClass.doesClassMatch(BluetoothClass.PROFILE_HEADSET)) {
return new Pair<Integer, String>(R.drawable.ic_bt_headset_hfp, HEADSET);
}
if (btClass.doesClassMatch(BluetoothClass.PROFILE_A2DP)) {
return new Pair<Integer, String>(R.drawable.ic_bt_headphones_a2dp, HEADPHONE);
}
}
return new Pair<Integer, String>(R.drawable.ic_settings_bluetooth, BLUETOOTH);
}
}