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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 android.annotation.NonNull;
import android.annotation.Nullable;
import android.os.Parcel;
import android.os.Parcelable;
import android.provider.OneTimeUseBuilder;
import com.android.internal.util.ArrayUtils;
import com.android.internal.util.CollectionUtils;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
* A request for the user to select a companion device to associate with.
*
* You can optionally set {@link Builder#addDeviceFilter filters} for which devices to show to the
* user to select from.
* The exact type and fields of the filter you can set depend on the
* medium type. See {@link Builder}'s static factory methods for specific protocols that are
* supported.
*
* You can also set {@link Builder#setSingleDevice single device} to request a popup with single
* device to be shown instead of a list to choose from
*/
public final class AssociationRequest implements Parcelable {
private final boolean mSingleDevice;
private final List<DeviceFilter<?>> mDeviceFilters;
private AssociationRequest(
boolean singleDevice, @Nullable List<DeviceFilter<?>> deviceFilters) {
this.mSingleDevice = singleDevice;
this.mDeviceFilters = CollectionUtils.emptyIfNull(deviceFilters);
}
private AssociationRequest(Parcel in) {
this(
in.readByte() != 0,
in.readParcelableList(new ArrayList<>(), AssociationRequest.class.getClassLoader()));
}
/** @hide */
public boolean isSingleDevice() {
return mSingleDevice;
}
/** @hide */
@NonNull
public List<DeviceFilter<?>> getDeviceFilters() {
return mDeviceFilters;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
AssociationRequest that = (AssociationRequest) o;
return mSingleDevice == that.mSingleDevice &&
Objects.equals(mDeviceFilters, that.mDeviceFilters);
}
@Override
public int hashCode() {
return Objects.hash(mSingleDevice, mDeviceFilters);
}
@Override
public String toString() {
return "AssociationRequest{" +
"mSingleDevice=" + mSingleDevice +
", mDeviceFilters=" + mDeviceFilters +
'}';
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeByte((byte) (mSingleDevice ? 1 : 0));
dest.writeParcelableList(mDeviceFilters, flags);
}
@Override
public int describeContents() {
return 0;
}
public static final Creator<AssociationRequest> CREATOR = new Creator<AssociationRequest>() {
@Override
public AssociationRequest createFromParcel(Parcel in) {
return new AssociationRequest(in);
}
@Override
public AssociationRequest[] newArray(int size) {
return new AssociationRequest[size];
}
};
/**
* A builder for {@link AssociationRequest}
*/
public static final class Builder extends OneTimeUseBuilder<AssociationRequest> {
private boolean mSingleDevice = false;
@Nullable private ArrayList<DeviceFilter<?>> mDeviceFilters = null;
public Builder() {}
/**
* @param singleDevice if true, scanning for a device will stop as soon as at least one
* fitting device is found
*/
@NonNull
public Builder setSingleDevice(boolean singleDevice) {
checkNotUsed();
this.mSingleDevice = singleDevice;
return this;
}
/**
* @param deviceFilter if set, only devices matching the given filter will be shown to the
* user
*/
@NonNull
public Builder addDeviceFilter(@Nullable DeviceFilter<?> deviceFilter) {
checkNotUsed();
if (deviceFilter != null) {
mDeviceFilters = ArrayUtils.add(mDeviceFilters, deviceFilter);
}
return this;
}
/** @inheritDoc */
@NonNull
@Override
public AssociationRequest build() {
markUsed();
return new AssociationRequest(mSingleDevice, mDeviceFilters);
}
}
}
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