/*
* Copyright (C) 2011 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.net.wifi.p2p;
import android.os.Parcelable;
import android.os.Parcel;
import android.net.wifi.p2p.WifiP2pDevice;
import android.text.TextUtils;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
/**
* A class representing a Wi-Fi P2p device list.
*
* Note that the operations are not thread safe.
* {@see WifiP2pManager}
*/
public class WifiP2pDeviceList implements Parcelable {
private final HashMap<String, WifiP2pDevice> mDevices = new HashMap<String, WifiP2pDevice>();
public WifiP2pDeviceList() {
}
/** copy constructor */
public WifiP2pDeviceList(WifiP2pDeviceList source) {
if (source != null) {
for (WifiP2pDevice d : source.getDeviceList()) {
mDevices.put(d.deviceAddress, new WifiP2pDevice(d));
}
}
}
/** @hide */
public WifiP2pDeviceList(ArrayList<WifiP2pDevice> devices) {
for (WifiP2pDevice device : devices) {
if (device.deviceAddress != null) {
mDevices.put(device.deviceAddress, new WifiP2pDevice(device));
}
}
}
private void validateDevice(WifiP2pDevice device) {
if (device == null) throw new IllegalArgumentException("Null device");
if (TextUtils.isEmpty(device.deviceAddress)) {
throw new IllegalArgumentException("Empty deviceAddress");
}
}
private void validateDeviceAddress(String deviceAddress) {
if (TextUtils.isEmpty(deviceAddress)) {
throw new IllegalArgumentException("Empty deviceAddress");
}
}
/** Clear the list @hide */
public boolean clear() {
if (mDevices.isEmpty()) return false;
mDevices.clear();
return true;
}
/**
* Add/update a device to the list. If the device is not found, a new device entry
* is created. If the device is already found, the device details are updated
* @param device to be updated
* @hide
*/
public void update(WifiP2pDevice device) {
updateSupplicantDetails(device);
mDevices.get(device.deviceAddress).status = device.status;
}
/** Only updates details fetched from the supplicant @hide */
public void updateSupplicantDetails(WifiP2pDevice device) {
validateDevice(device);
WifiP2pDevice d = mDevices.get(device.deviceAddress);
if (d != null) {
d.deviceName = device.deviceName;
d.primaryDeviceType = device.primaryDeviceType;
d.secondaryDeviceType = device.secondaryDeviceType;
d.wpsConfigMethodsSupported = device.wpsConfigMethodsSupported;
d.deviceCapability = device.deviceCapability;
d.groupCapability = device.groupCapability;
d.wfdInfo = device.wfdInfo;
return;
}
//Not found, add a new one
mDevices.put(device.deviceAddress, device);
}
/** @hide */
public void updateGroupCapability(String deviceAddress, int groupCapab) {
validateDeviceAddress(deviceAddress);
WifiP2pDevice d = mDevices.get(deviceAddress);
if (d != null) {
d.groupCapability = groupCapab;
}
}
/** @hide */
public void updateStatus(String deviceAddress, int status) {
validateDeviceAddress(deviceAddress);
WifiP2pDevice d = mDevices.get(deviceAddress);
if (d != null) {
d.status = status;
}
}
/**
* Fetch a device from the list
* @param deviceAddress is the address of the device
* @return WifiP2pDevice device found, or null if none found
*/
public WifiP2pDevice get(String deviceAddress) {
validateDeviceAddress(deviceAddress);
return mDevices.get(deviceAddress);
}
/** @hide */
public boolean remove(WifiP2pDevice device) {
validateDevice(device);
return mDevices.remove(device.deviceAddress) != null;
}
/**
* Remove a device from the list
* @param deviceAddress is the address of the device
* @return WifiP2pDevice device removed, or null if none removed
* @hide
*/
public WifiP2pDevice remove(String deviceAddress) {
validateDeviceAddress(deviceAddress);
return mDevices.remove(deviceAddress);
}
/** Returns true if any device the list was removed @hide */
public boolean remove(WifiP2pDeviceList list) {
boolean ret = false;
for (WifiP2pDevice d : list.mDevices.values()) {
if (remove(d)) ret = true;
}
return ret;
}
/** Get the list of devices */
public Collection<WifiP2pDevice> getDeviceList() {
return Collections.unmodifiableCollection(mDevices.values());
}
/** @hide */
public boolean isGroupOwner(String deviceAddress) {
validateDeviceAddress(deviceAddress);
WifiP2pDevice device = mDevices.get(deviceAddress);
if (device == null) {
throw new IllegalArgumentException("Device not found " + deviceAddress);
}
return device.isGroupOwner();
}
public String toString() {
StringBuffer sbuf = new StringBuffer();
for (WifiP2pDevice device : mDevices.values()) {
sbuf.append("\n").append(device);
}
return sbuf.toString();
}
/** Implement the Parcelable interface */
public int describeContents() {
return 0;
}
/** Implement the Parcelable interface */
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mDevices.size());
for(WifiP2pDevice device : mDevices.values()) {
dest.writeParcelable(device, flags);
}
}
/** Implement the Parcelable interface */
public static final Creator<WifiP2pDeviceList> CREATOR =
new Creator<WifiP2pDeviceList>() {
public WifiP2pDeviceList createFromParcel(Parcel in) {
WifiP2pDeviceList deviceList = new WifiP2pDeviceList();
int deviceCount = in.readInt();
for (int i = 0; i < deviceCount; i++) {
deviceList.update((WifiP2pDevice)in.readParcelable(null));
}
return deviceList;
}
public WifiP2pDeviceList[] newArray(int size) {
return new WifiP2pDeviceList[size];
}
};
}