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/*
* Copyright (C) 2010 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.wifi;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.preference.SwitchPreference;
import android.provider.Settings;
import com.android.settings.R;
import com.android.settingslib.TetherUtil;
import java.util.ArrayList;
public class WifiApEnabler {
private final Context mContext;
private final SwitchPreference mSwitch;
private final CharSequence mOriginalSummary;
private WifiManager mWifiManager;
private final IntentFilter mIntentFilter;
ConnectivityManager mCm;
private String[] mWifiRegexs;
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (WifiManager.WIFI_AP_STATE_CHANGED_ACTION.equals(action)) {
handleWifiApStateChanged(intent.getIntExtra(
WifiManager.EXTRA_WIFI_AP_STATE, WifiManager.WIFI_AP_STATE_FAILED));
} else if (ConnectivityManager.ACTION_TETHER_STATE_CHANGED.equals(action)) {
ArrayList<String> available = intent.getStringArrayListExtra(
ConnectivityManager.EXTRA_AVAILABLE_TETHER);
ArrayList<String> active = intent.getStringArrayListExtra(
ConnectivityManager.EXTRA_ACTIVE_TETHER);
ArrayList<String> errored = intent.getStringArrayListExtra(
ConnectivityManager.EXTRA_ERRORED_TETHER);
updateTetherState(available.toArray(), active.toArray(), errored.toArray());
} else if (Intent.ACTION_AIRPLANE_MODE_CHANGED.equals(action)) {
enableWifiSwitch();
}
}
};
public WifiApEnabler(Context context, SwitchPreference switchPreference) {
mContext = context;
mSwitch = switchPreference;
mOriginalSummary = switchPreference.getSummary();
switchPreference.setPersistent(false);
mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
mCm = (ConnectivityManager)mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
mWifiRegexs = mCm.getTetherableWifiRegexs();
mIntentFilter = new IntentFilter(WifiManager.WIFI_AP_STATE_CHANGED_ACTION);
mIntentFilter.addAction(ConnectivityManager.ACTION_TETHER_STATE_CHANGED);
mIntentFilter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
}
public void resume() {
mContext.registerReceiver(mReceiver, mIntentFilter);
enableWifiSwitch();
}
public void pause() {
mContext.unregisterReceiver(mReceiver);
}
private void enableWifiSwitch() {
boolean isAirplaneMode = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.AIRPLANE_MODE_ON, 0) != 0;
if(!isAirplaneMode) {
mSwitch.setEnabled(true);
} else {
mSwitch.setSummary(mOriginalSummary);
mSwitch.setEnabled(false);
}
}
public void setSoftapEnabled(boolean enable) {
if (TetherUtil.setWifiTethering(enable, mContext)) {
/* Disable here, enabled on receiving success broadcast */
mSwitch.setEnabled(false);
} else {
mSwitch.setSummary(R.string.wifi_error);
}
}
public void updateConfigSummary(WifiConfiguration wifiConfig) {
String s = mContext.getString(
com.android.internal.R.string.wifi_tether_configure_ssid_default);
mSwitch.setSummary(String.format(
mContext.getString(R.string.wifi_tether_enabled_subtext),
(wifiConfig == null) ? s : wifiConfig.SSID));
}
private void updateTetherState(Object[] available, Object[] tethered, Object[] errored) {
boolean wifiTethered = false;
boolean wifiErrored = false;
for (Object o : tethered) {
String s = (String)o;
for (String regex : mWifiRegexs) {
if (s.matches(regex)) wifiTethered = true;
}
}
for (Object o: errored) {
String s = (String)o;
for (String regex : mWifiRegexs) {
if (s.matches(regex)) wifiErrored = true;
}
}
if (wifiTethered) {
WifiConfiguration wifiConfig = mWifiManager.getWifiApConfiguration();
updateConfigSummary(wifiConfig);
} else if (wifiErrored) {
mSwitch.setSummary(R.string.wifi_error);
}
}
private void handleWifiApStateChanged(int state) {
switch (state) {
case WifiManager.WIFI_AP_STATE_ENABLING:
mSwitch.setSummary(R.string.wifi_tether_starting);
mSwitch.setEnabled(false);
break;
case WifiManager.WIFI_AP_STATE_ENABLED:
/**
* Summary on enable is handled by tether
* broadcast notice
*/
mSwitch.setChecked(true);
/* Doesnt need the airplane check */
mSwitch.setEnabled(true);
break;
case WifiManager.WIFI_AP_STATE_DISABLING:
mSwitch.setSummary(R.string.wifi_tether_stopping);
mSwitch.setChecked(false);
mSwitch.setEnabled(false);
break;
case WifiManager.WIFI_AP_STATE_DISABLED:
mSwitch.setChecked(false);
mSwitch.setSummary(mOriginalSummary);
enableWifiSwitch();
break;
default:
mSwitch.setChecked(false);
mSwitch.setSummary(R.string.wifi_error);
enableWifiSwitch();
}
}
}
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