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/*
* Copyright (C) 2012 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;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.nsd.NsdManager;
import android.preference.Preference;
import android.preference.SwitchPreference;
/**
* NsdEnabler is a helper to manage network service discovery on/off checkbox state.
*/
public class NsdEnabler implements Preference.OnPreferenceChangeListener {
private final Context mContext;
private final SwitchPreference mSwitchPreference;
private final IntentFilter mIntentFilter;
private NsdManager mNsdManager;
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (NsdManager.ACTION_NSD_STATE_CHANGED.equals(action)) {
handleNsdStateChanged(intent.getIntExtra(NsdManager.EXTRA_NSD_STATE,
NsdManager.NSD_STATE_DISABLED));
}
}
};
public NsdEnabler(Context context, SwitchPreference pref) {
mContext = context;
mSwitchPreference = pref;
mNsdManager = (NsdManager) mContext.getSystemService(Context.NSD_SERVICE);
mIntentFilter = new IntentFilter(NsdManager.ACTION_NSD_STATE_CHANGED);
}
public void resume() {
mContext.registerReceiver(mReceiver, mIntentFilter);
mSwitchPreference.setOnPreferenceChangeListener(this);
}
public void pause() {
mContext.unregisterReceiver(mReceiver);
mSwitchPreference.setOnPreferenceChangeListener(null);
}
public boolean onPreferenceChange(Preference preference, Object value) {
final boolean desiredState = (Boolean) value;
mSwitchPreference.setEnabled(false);
mNsdManager.setEnabled(desiredState);
return false;
}
private void handleNsdStateChanged(int newState) {
switch (newState) {
case NsdManager.NSD_STATE_DISABLED:
mSwitchPreference.setChecked(false);
mSwitchPreference.setEnabled(true);
break;
case NsdManager.NSD_STATE_ENABLED:
mSwitchPreference.setChecked(true);
mSwitchPreference.setEnabled(true);
break;
}
}
}
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