1/*
2 * Copyright (C) 2014 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.tv.settings.connectivity;
18
19import com.android.tv.settings.MenuItem;
20import com.android.tv.settings.R;
21import com.android.tv.settings.util.UriUtils;
22
23import android.content.Context;
24import android.net.ConnectivityManager;
25import android.net.NetworkInfo;
26import android.net.wifi.WifiConfiguration;
27import android.net.wifi.WifiInfo;
28import android.net.wifi.WifiManager;
29import android.util.Log;
30
31/**
32 * Gets an icon uri based on the current connectivity status.
33 */
34public class ConnectivityStatusIconUriGetter implements MenuItem.UriGetter {
35
36    private static final String TAG = "ConnectivityStatusIconUriGetter";
37    private static final boolean DEBUG = true;
38
39    private final Context mContext;
40    private final int mEthernetDrawableResourceId;
41    private final int mDisconnectedDrawableResourceId;
42    private final ConnectivityManager mConnectivityManager;
43    private final WifiManager mWifiManager;
44
45    public static ConnectivityStatusIconUriGetter createWifiStatusIconUriGetter(Context context) {
46        return new ConnectivityStatusIconUriGetter(context, R.drawable.ic_settings_wifi_4,
47                R.drawable.ic_settings_wifi_4);
48    }
49
50    public ConnectivityStatusIconUriGetter(Context context) {
51        this(context, R.drawable.ic_settings_ethernet_active,
52                R.drawable.ic_settings_connection_status);
53    }
54
55    public ConnectivityStatusIconUriGetter(Context context, int ethernetDrawableResourceId,
56            int disconnectedDrawableResourceId) {
57        mContext = context;
58        mEthernetDrawableResourceId = ethernetDrawableResourceId;
59        mDisconnectedDrawableResourceId = disconnectedDrawableResourceId;
60        mConnectivityManager = (ConnectivityManager) mContext.getSystemService(
61                Context.CONNECTIVITY_SERVICE);
62        mWifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
63    }
64
65    @Override
66    public String getUri() {
67        String uri = UriUtils.getAndroidResourceUri(mContext, getConnectionStatusResId());
68        if (DEBUG) {
69            Log.d(TAG, "Returning connectivity status icon: " + uri);
70        }
71        return uri;
72    }
73
74    private int getConnectionStatusResId() {
75        NetworkInfo networkInfo = mConnectivityManager.getActiveNetworkInfo();
76        if (networkInfo == null) {
77            return mDisconnectedDrawableResourceId;
78        }
79
80        switch (networkInfo.getType()) {
81            case ConnectivityManager.TYPE_WIFI:
82                return getWifiDrawableResourceId();
83            case ConnectivityManager.TYPE_ETHERNET:
84                return mEthernetDrawableResourceId;
85            default:
86                return mDisconnectedDrawableResourceId;
87        }
88    }
89
90    private int getWifiDrawableResourceId() {
91        WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
92        boolean isOpen = isOpenNetwork(mWifiManager, wifiInfo);
93        int strength = WifiManager.calculateSignalLevel(wifiInfo.getRssi(), 4);
94
95        switch (strength) {
96            case 0:
97                return isOpen ? R.drawable.ic_settings_wifi_active_1
98                        : R.drawable.ic_settings_wifi_secure_active_1;
99            case 1:
100                return isOpen ? R.drawable.ic_settings_wifi_active_2
101                        : R.drawable.ic_settings_wifi_secure_active_2;
102            case 2:
103                return isOpen ? R.drawable.ic_settings_wifi_active_3
104                        : R.drawable.ic_settings_wifi_secure_active_3;
105            case 3:
106                return isOpen ? R.drawable.ic_settings_wifi_active_4
107                        : R.drawable.ic_settings_wifi_secure_active_4;
108        }
109        return mDisconnectedDrawableResourceId;
110    }
111
112    private boolean isOpenNetwork(WifiManager wifiMan, WifiInfo wifiInfo) {
113        WifiConfiguration network = WifiConfigHelper.getWifiConfiguration(wifiMan,
114                wifiInfo.getNetworkId());
115        if (network != null) {
116            return WifiSecurity.isOpen(network);
117        }
118        Log.w(TAG, "Could not determine if network is secure or not! Defaulting to open icon.");
119        return true;
120    }
121}
122