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/*
* Copyright (C) 2006 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 android.telephony.gsm;
import android.os.Bundle;
import android.telephony.CellLocation;
/**
* Represents the cell location on a GSM phone.
*/
public class GsmCellLocation extends CellLocation {
private int mLac;
private int mCid;
private int mPsc;
/**
* Empty constructor. Initializes the LAC and CID to -1.
*/
public GsmCellLocation() {
mLac = -1;
mCid = -1;
mPsc = -1;
}
/**
* Initialize the object from a bundle.
*/
public GsmCellLocation(Bundle bundle) {
mLac = bundle.getInt("lac", -1);
mCid = bundle.getInt("cid", -1);
mPsc = bundle.getInt("psc", -1);
}
/**
* @return gsm location area code, -1 if unknown, 0xffff max legal value
*/
public int getLac() {
return mLac;
}
/**
* @return gsm cell id, -1 if unknown, 0xffff max legal value
*/
public int getCid() {
return mCid;
}
/**
* On a UMTS network, returns the primary scrambling code of the serving
* cell.
*
* @return primary scrambling code for UMTS, -1 if unknown or GSM
*/
public int getPsc() {
return mPsc;
}
/**
* Invalidate this object. The location area code and the cell id are set to -1.
*/
public void setStateInvalid() {
mLac = -1;
mCid = -1;
mPsc = -1;
}
/**
* Set the location area code and the cell id.
*/
public void setLacAndCid(int lac, int cid) {
mLac = lac;
mCid = cid;
}
/**
* Set the primary scrambling code.
* @hide
*/
public void setPsc(int psc) {
mPsc = psc;
}
@Override
public int hashCode() {
return mLac ^ mCid;
}
@Override
public boolean equals(Object o) {
GsmCellLocation s;
try {
s = (GsmCellLocation)o;
} catch (ClassCastException ex) {
return false;
}
if (o == null) {
return false;
}
return equalsHandlesNulls(mLac, s.mLac) && equalsHandlesNulls(mCid, s.mCid)
&& equalsHandlesNulls(mPsc, s.mPsc);
}
@Override
public String toString() {
return "["+ mLac + "," + mCid + "," + mPsc + "]";
}
/**
* Test whether two objects hold the same data values or both are null
*
* @param a first obj
* @param b second obj
* @return true if two objects equal or both are null
*/
private static boolean equalsHandlesNulls(Object a, Object b) {
return (a == null) ? (b == null) : a.equals (b);
}
/**
* Set intent notifier Bundle based on service state
*
* @param m intent notifier Bundle
*/
public void fillInNotifierBundle(Bundle m) {
m.putInt("lac", mLac);
m.putInt("cid", mCid);
m.putInt("psc", mPsc);
}
/**
* @hide
*/
public boolean isEmpty() {
return (mLac == -1 && mCid == -1 && mPsc == -1);
}
}
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