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/*
* Copyright (C) 2016 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.printservice.recommendation;
import android.annotation.IntRange;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.os.Parcel;
import android.os.Parcelable;
import android.printservice.PrintService;
import com.android.internal.util.Preconditions;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
/**
* A recommendation to install a {@link PrintService print service}.
*
* @hide
*/
@SystemApi
public final class RecommendationInfo implements Parcelable {
/** Package name of the print service. */
private @NonNull final CharSequence mPackageName;
/** Display name of the print service. */
private @NonNull final CharSequence mName;
/** Printers the print service would discover if installed. */
@NonNull private final List<InetAddress> mDiscoveredPrinters;
/** If the service detects printer from multiple vendors. */
private final boolean mRecommendsMultiVendorService;
/**
* Create a new recommendation.
*
* @param packageName Package name of the print service
* @param name Display name of the print service
* @param discoveredPrinters The {@link InetAddress addresses} of the discovered
* printers. Cannot be null or empty.
* @param recommendsMultiVendorService If the service detects printer from multiple vendor
*/
public RecommendationInfo(@NonNull CharSequence packageName, @NonNull CharSequence name,
@NonNull List<InetAddress> discoveredPrinters, boolean recommendsMultiVendorService) {
mPackageName = Preconditions.checkStringNotEmpty(packageName);
mName = Preconditions.checkStringNotEmpty(name);
mDiscoveredPrinters = Preconditions.checkCollectionElementsNotNull(discoveredPrinters,
"discoveredPrinters");
mRecommendsMultiVendorService = recommendsMultiVendorService;
}
/**
* Create a new recommendation.
*
* @param packageName Package name of the print service
* @param name Display name of the print service
* @param numDiscoveredPrinters Number of printers the print service would discover if
* installed
* @param recommendsMultiVendorService If the service detects printer from multiple vendor
*
* @deprecated Use {@link RecommendationInfo(String, String, List<InetAddress>, boolean)}
* instead
*/
@Deprecated
public RecommendationInfo(@NonNull CharSequence packageName, @NonNull CharSequence name,
@IntRange(from = 0) int numDiscoveredPrinters, boolean recommendsMultiVendorService) {
throw new IllegalArgumentException("This constructor has been deprecated");
}
/**
* Read a list of blobs from the parcel and return it as a list of {@link InetAddress
* addresses}.
*
* @param parcel the parcel to read the blobs from
*
* @return The list of {@link InetAddress addresses} or null if no printers were found.
*
* @see #writeToParcel(Parcel, int)
*/
@NonNull private static ArrayList<InetAddress> readDiscoveredPrinters(@NonNull Parcel parcel) {
int numDiscoveredPrinters = parcel.readInt();
ArrayList<InetAddress> discoveredPrinters = new ArrayList<>(numDiscoveredPrinters);
for (int i = 0; i < numDiscoveredPrinters; i++) {
try {
discoveredPrinters.add(InetAddress.getByAddress(parcel.readBlob()));
} catch (UnknownHostException e) {
throw new IllegalArgumentException(e);
}
}
return discoveredPrinters;
}
/**
* Create a new recommendation from a parcel.
*
* @param parcel The parcel containing the data
*
* @see #CREATOR
*/
private RecommendationInfo(@NonNull Parcel parcel) {
this(parcel.readCharSequence(), parcel.readCharSequence(), readDiscoveredPrinters(parcel),
parcel.readByte() != 0);
}
/**
* @return The package name the recommendations recommends.
*/
public CharSequence getPackageName() {
return mPackageName;
}
/**
* @return Whether the recommended print service detects printers of more than one vendor.
*/
public boolean recommendsMultiVendorService() {
return mRecommendsMultiVendorService;
}
/**
* @return The {@link InetAddress address} of the printers the print service would detect.
*/
@NonNull public List<InetAddress> getDiscoveredPrinters() {
return mDiscoveredPrinters;
}
/**
* @return The number of printer the print service would detect.
*/
public int getNumDiscoveredPrinters() {
return mDiscoveredPrinters.size();
}
/**
* @return The name of the recommended print service.
*/
public CharSequence getName() {
return mName;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeCharSequence(mPackageName);
dest.writeCharSequence(mName);
int numDiscoveredPrinters = mDiscoveredPrinters.size();
dest.writeInt(numDiscoveredPrinters);
for (InetAddress printer : mDiscoveredPrinters) {
dest.writeBlob(printer.getAddress());
}
dest.writeByte((byte) (mRecommendsMultiVendorService ? 1 : 0));
}
/**
* Utility class used to create new print service recommendation objects from parcels.
*
* @see #RecommendationInfo(Parcel)
*/
public static final @android.annotation.NonNull Creator<RecommendationInfo> CREATOR =
new Creator<RecommendationInfo>() {
@Override
public RecommendationInfo createFromParcel(Parcel in) {
return new RecommendationInfo(in);
}
@Override
public RecommendationInfo[] newArray(int size) {
return new RecommendationInfo[size];
}
};
}
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