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/*
* Copyright (C) 2017 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.companion;
import static android.companion.BluetoothDeviceFilterUtils.getDeviceDisplayNameInternal;
import static android.companion.BluetoothDeviceFilterUtils.patternFromString;
import static android.companion.BluetoothDeviceFilterUtils.patternToString;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.SuppressLint;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.le.ScanFilter;
import android.net.wifi.ScanResult;
import android.os.Parcel;
import android.provider.OneTimeUseBuilder;
import java.util.Objects;
import java.util.regex.Pattern;
/**
* A filter for Wifi devices
*
* @see ScanFilter
*/
public final class WifiDeviceFilter implements DeviceFilter<ScanResult> {
private final Pattern mNamePattern;
private WifiDeviceFilter(Pattern namePattern) {
mNamePattern = namePattern;
}
@SuppressLint("ParcelClassLoader")
private WifiDeviceFilter(Parcel in) {
this(patternFromString(in.readString()));
}
/** @hide */
@Nullable
public Pattern getNamePattern() {
return mNamePattern;
}
/** @hide */
@Override
public boolean matches(ScanResult device) {
return BluetoothDeviceFilterUtils.matchesName(getNamePattern(), device);
}
/** @hide */
@Override
public String getDeviceDisplayName(ScanResult device) {
return getDeviceDisplayNameInternal(device);
}
/** @hide */
@Override
public int getMediumType() {
return MEDIUM_TYPE_WIFI;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
WifiDeviceFilter that = (WifiDeviceFilter) o;
return Objects.equals(mNamePattern, that.mNamePattern);
}
@Override
public int hashCode() {
return Objects.hash(mNamePattern);
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(patternToString(getNamePattern()));
}
@Override
public int describeContents() {
return 0;
}
public static final Creator<WifiDeviceFilter> CREATOR
= new Creator<WifiDeviceFilter>() {
@Override
public WifiDeviceFilter createFromParcel(Parcel in) {
return new WifiDeviceFilter(in);
}
@Override
public WifiDeviceFilter[] newArray(int size) {
return new WifiDeviceFilter[size];
}
};
/**
* Builder for {@link WifiDeviceFilter}
*/
public static final class Builder extends OneTimeUseBuilder<WifiDeviceFilter> {
private Pattern mNamePattern;
/**
* @param regex if set, only devices with {@link BluetoothDevice#getName name} matching the
* given regular expression will be shown
* @return self for chaining
*/
public Builder setNamePattern(@Nullable Pattern regex) {
checkNotUsed();
mNamePattern = regex;
return this;
}
/** @inheritDoc */
@Override
@NonNull
public WifiDeviceFilter build() {
markUsed();
return new WifiDeviceFilter(mNamePattern);
}
}
}
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