RecommendationServiceImpl.java revision a26b775dc132b135fa23ab17c39c08955e291da2 
1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.printservice.recommendation;
18
19import android.content.res.Configuration;
20import android.printservice.recommendation.RecommendationInfo;
21import android.printservice.recommendation.RecommendationService;
22import android.printservice.PrintService;
23import android.util.Log;
24import com.android.printservice.recommendation.plugin.hp.HPRecommendationPlugin;
25import com.android.printservice.recommendation.plugin.mdnsFilter.MDNSFilterPlugin;
26import com.android.printservice.recommendation.plugin.mdnsFilter.VendorConfig;
27import com.android.printservice.recommendation.plugin.mopria.MopriaRecommendationPlugin;
28import com.android.printservice.recommendation.plugin.samsung.SamsungRecommendationPlugin;
29import org.xmlpull.v1.XmlPullParserException;
30
31import java.io.IOException;
32import java.util.ArrayList;
33
34/**
35 * Service that recommends {@link PrintService print services} that might be a good idea to install.
36 */
37public class RecommendationServiceImpl extends RecommendationService
38        implements RemotePrintServicePlugin.OnChangedListener {
39    private static final String LOG_TAG = "PrintServiceRecService";
40
41    /** All registered plugins */
42    private ArrayList<RemotePrintServicePlugin> mPlugins;
43
44    @Override
45    public void onConnected() {
46        mPlugins = new ArrayList<>();
47
48        try {
49            for (VendorConfig config : VendorConfig.getAllConfigs(this)) {
50                try {
51                    mPlugins.add(new RemotePrintServicePlugin(new MDNSFilterPlugin(this,
52                            config.name, config.packageName, config.mDNSNames), this, false));
53                } catch (Exception e) {
54                    Log.e(LOG_TAG, "Could not initiate simple MDNS plugin for " +
55                            config.packageName, e);
56                }
57            }
58        } catch (IOException | XmlPullParserException e) {
59            new RuntimeException("Could not parse vendorconfig", e);
60        }
61
62        try {
63            mPlugins.add(new RemotePrintServicePlugin(new HPRecommendationPlugin(this), this,
64                    false));
65        } catch (Exception e) {
66            Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_hp) + " plugin",
67                    e);
68        }
69
70        try {
71            mPlugins.add(new RemotePrintServicePlugin(new MopriaRecommendationPlugin(this), this,
72                    true));
73        } catch (Exception e) {
74            Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_morpia) +
75                    " plugin", e);
76        }
77
78        try {
79            mPlugins.add(new RemotePrintServicePlugin(new SamsungRecommendationPlugin(this), this,
80                    false));
81        } catch (Exception e) {
82            Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_samsung) +
83                    " plugin", e);
84        }
85
86        final int numPlugins = mPlugins.size();
87        for (int i = 0; i < numPlugins; i++) {
88            try {
89                mPlugins.get(i).start();
90            } catch (RemotePrintServicePlugin.PluginException e) {
91                Log.e(LOG_TAG, "Could not start plugin", e);
92            }
93        }
94    }
95
96    @Override
97    public void onDisconnected() {
98        final int numPlugins = mPlugins.size();
99        for (int i = 0; i < numPlugins; i++) {
100            try {
101                mPlugins.get(i).stop();
102            } catch (RemotePrintServicePlugin.PluginException e) {
103                Log.e(LOG_TAG, "Could not stop plugin", e);
104            }
105        }
106    }
107
108    @Override
109    public void onConfigurationChanged(Configuration newConfig) {
110        // Need to update plugin names as they might be localized
111        onChanged();
112    }
113
114    @Override
115    public void onChanged() {
116        ArrayList<RecommendationInfo> recommendations = new ArrayList<>();
117
118        final int numPlugins = mPlugins.size();
119        for (int i = 0; i < numPlugins; i++) {
120            RemotePrintServicePlugin plugin = mPlugins.get(i);
121
122            try {
123                int numPrinters = plugin.getNumPrinters();
124
125                if (numPrinters > 0) {
126                    recommendations.add(new RecommendationInfo(plugin.packageName,
127                            getString(plugin.name), numPrinters,
128                            plugin.recommendsMultiVendorService));
129                }
130            } catch (Exception e) {
131                Log.e(LOG_TAG, "Could not read state of plugin for " + plugin.packageName, e);
132            }
133        }
134
135        updateRecommendations(recommendations);
136    }
137}
138