| /* |
| * 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 com.android.printservice.recommendation.plugin.samsung; |
| |
| import android.content.Context; |
| import android.net.nsd.NsdManager; |
| import android.net.nsd.NsdServiceInfo; |
| import android.annotation.NonNull; |
| import android.text.TextUtils; |
| import com.android.printservice.recommendation.PrintServicePlugin; |
| |
| public abstract class ServiceRecommendationPlugin implements PrintServicePlugin, ServiceListener.Observer { |
| |
| protected static final String PDL_ATTRIBUTE = "pdl"; |
| |
| protected final Object mLock = new Object(); |
| protected PrinterDiscoveryCallback mCallback = null; |
| protected final ServiceListener mListener; |
| protected final NsdManager mNSDManager; |
| protected final VendorInfo mVendorInfo; |
| private final int mVendorStringID; |
| |
| protected ServiceRecommendationPlugin(Context context, int vendorStringID, VendorInfo vendorInfo, String[] services) { |
| mNSDManager = (NsdManager)context.getSystemService(Context.NSD_SERVICE); |
| mVendorStringID = vendorStringID; |
| mVendorInfo = vendorInfo; |
| mListener = new ServiceListener(context, this, services); |
| } |
| |
| @Override |
| public int getName() { |
| return mVendorStringID; |
| } |
| |
| @NonNull |
| @Override |
| public CharSequence getPackageName() { |
| return mVendorInfo.mPackageName; |
| } |
| |
| @Override |
| public void start(@NonNull PrinterDiscoveryCallback callback) throws Exception { |
| synchronized (mLock) { |
| mCallback = callback; |
| } |
| mListener.start(); |
| } |
| |
| @Override |
| public void stop() throws Exception { |
| synchronized (mLock) { |
| mCallback = null; |
| } |
| mListener.stop(); |
| } |
| |
| @Override |
| public void dataSetChanged() { |
| synchronized (mLock) { |
| if (mCallback != null) mCallback.onChanged(getCount()); |
| } |
| } |
| |
| @Override |
| public boolean matchesCriteria(String vendor, NsdServiceInfo nsdServiceInfo) { |
| return TextUtils.equals(vendor, mVendorInfo.mVendorID); |
| } |
| |
| public int getCount() { |
| return mListener.getCount().second; |
| } |
| } |