auto import from //depot/cupcake/@135843
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The Android Open Source Project
188
src/com/android/settings/wifi/WifiEnabler.java
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188
src/com/android/settings/wifi/WifiEnabler.java
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.wifi;
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import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED;
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import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING;
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import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED;
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import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING;
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import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN;
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import com.android.settings.R;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.net.NetworkInfo;
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import android.net.wifi.WifiManager;
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import android.preference.Preference;
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import android.preference.CheckBoxPreference;
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import android.text.TextUtils;
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import android.util.Config;
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import android.util.Log;
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public class WifiEnabler implements Preference.OnPreferenceChangeListener {
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private static final boolean LOCAL_LOGD = Config.LOGD || WifiLayer.LOGV;
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private static final String TAG = "SettingsWifiEnabler";
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private final Context mContext;
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private final WifiManager mWifiManager;
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private final CheckBoxPreference mWifiCheckBoxPref;
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private final CharSequence mOriginalSummary;
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private final IntentFilter mWifiStateFilter;
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private final BroadcastReceiver mWifiStateReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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if (intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
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handleWifiStateChanged(
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intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WIFI_STATE_UNKNOWN),
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intent.getIntExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE,
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WIFI_STATE_UNKNOWN));
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} else if (intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
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handleNetworkStateChanged(
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(NetworkInfo) intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO));
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}
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}
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};
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public WifiEnabler(Context context, WifiManager wifiManager,
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CheckBoxPreference wifiCheckBoxPreference) {
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mContext = context;
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mWifiCheckBoxPref = wifiCheckBoxPreference;
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mWifiManager = wifiManager;
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mOriginalSummary = wifiCheckBoxPreference.getSummary();
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wifiCheckBoxPreference.setPersistent(false);
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mWifiStateFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);
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mWifiStateFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
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}
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public void resume() {
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int state = mWifiManager.getWifiState();
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// This is the widget enabled state, not the preference toggled state
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mWifiCheckBoxPref.setEnabled(state == WIFI_STATE_ENABLED || state == WIFI_STATE_DISABLED
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|| state == WIFI_STATE_UNKNOWN);
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mContext.registerReceiver(mWifiStateReceiver, mWifiStateFilter);
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mWifiCheckBoxPref.setOnPreferenceChangeListener(this);
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}
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public void pause() {
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mContext.unregisterReceiver(mWifiStateReceiver);
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mWifiCheckBoxPref.setOnPreferenceChangeListener(null);
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}
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public boolean onPreferenceChange(Preference preference, Object value) {
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// Turn on/off Wi-Fi
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setWifiEnabled((Boolean) value);
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// Don't update UI to opposite state until we're sure
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return false;
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}
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private void setWifiEnabled(final boolean enable) {
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// Disable button
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mWifiCheckBoxPref.setEnabled(false);
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if (!mWifiManager.setWifiEnabled(enable)) {
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mWifiCheckBoxPref.setSummary(enable ? R.string.error_starting : R.string.error_stopping);
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}
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}
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private void handleWifiStateChanged(int wifiState, int previousWifiState) {
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if (LOCAL_LOGD) {
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Log.d(TAG, "Received wifi state changed from "
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+ getHumanReadableWifiState(previousWifiState) + " to "
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+ getHumanReadableWifiState(wifiState));
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}
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if (wifiState == WIFI_STATE_DISABLED || wifiState == WIFI_STATE_ENABLED) {
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mWifiCheckBoxPref.setChecked(wifiState == WIFI_STATE_ENABLED);
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mWifiCheckBoxPref
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.setSummary(wifiState == WIFI_STATE_DISABLED ? mOriginalSummary : null);
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mWifiCheckBoxPref.setEnabled(isEnabledByDependency());
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} else if (wifiState == WIFI_STATE_DISABLING || wifiState == WIFI_STATE_ENABLING) {
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mWifiCheckBoxPref.setSummary(wifiState == WIFI_STATE_ENABLING ? R.string.wifi_starting
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: R.string.wifi_stopping);
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} else if (wifiState == WIFI_STATE_UNKNOWN) {
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int message = R.string.wifi_error;
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if (previousWifiState == WIFI_STATE_ENABLING) message = R.string.error_starting;
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else if (previousWifiState == WIFI_STATE_DISABLING) message = R.string.error_stopping;
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mWifiCheckBoxPref.setChecked(false);
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mWifiCheckBoxPref.setSummary(message);
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mWifiCheckBoxPref.setEnabled(true);
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}
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}
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private void handleNetworkStateChanged(NetworkInfo networkInfo) {
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if (LOCAL_LOGD) {
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Log.d(TAG, "Received network state changed to " + networkInfo);
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}
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if (mWifiManager.isWifiEnabled()) {
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String summary = WifiStatus.getStatus(mContext,
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mWifiManager.getConnectionInfo().getSSID(), networkInfo.getDetailedState());
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mWifiCheckBoxPref.setSummary(summary);
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}
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}
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private boolean isEnabledByDependency() {
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Preference dep = getDependencyPreference();
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if (dep == null) {
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return true;
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}
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return !dep.shouldDisableDependents();
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}
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private Preference getDependencyPreference() {
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String depKey = mWifiCheckBoxPref.getDependency();
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if (TextUtils.isEmpty(depKey)) {
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return null;
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}
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return mWifiCheckBoxPref.getPreferenceManager().findPreference(depKey);
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}
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private static String getHumanReadableWifiState(int wifiState) {
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switch (wifiState) {
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case WIFI_STATE_DISABLED:
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return "Disabled";
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case WIFI_STATE_DISABLING:
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return "Disabling";
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case WIFI_STATE_ENABLED:
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return "Enabled";
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case WIFI_STATE_ENABLING:
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return "Enabling";
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case WIFI_STATE_UNKNOWN:
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return "Unknown";
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default:
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return "Some other state!";
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}
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}
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}
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