src/chrome/android/java/src/org/chromium/chrome/browser/preferences/NetworkPredictionOptions.java

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 package org.chromium.chrome.browser.preferences;
   6
   7 import org.chromium.chrome.R;
   8
   9 import java.util.Locale;
  10
  11 /**
  12  * Bandwidth options available based on network.
  13  */
  14 public enum NetworkPredictionOptions {
  15     NETWORK_PREDICTION_ALWAYS,
  16     NETWORK_PREDICTION_WIFI_ONLY,
  17     NETWORK_PREDICTION_NEVER;
  18
  19     public static final NetworkPredictionOptions DEFAULT = NETWORK_PREDICTION_WIFI_ONLY;
  20
  21     /**
  22      * @return The number of choices offered for the user.
  23      */
  24     public static int choiceCount() {
  25         return values().length;
  26     }
  27
  28     /**
  29      * Fetch the display title for the preference.
  30      * @return resource for the title.
  31      */
  32     public int getDisplayTitle() {
  33         switch(this) {
  34             case NETWORK_PREDICTION_ALWAYS:
  35                 return R.string.always_prefetch_bandwidth_entry;
  36             case NETWORK_PREDICTION_WIFI_ONLY :
  37                 return R.string.wifi_prefetch_bandwidth_entry;
  38             case NETWORK_PREDICTION_NEVER:
  39                 return R.string.never_prefetch_bandwidth_entry;
  40             default:
  41                 assert false;
  42                 return 0;
  43         }
  44     }
  45
  46     /**
  47      * Convert an integer to enum NetworkPredictionOptions.
  48      * @return NetworkPredictionOptions instance.
  49      */
  50     public static NetworkPredictionOptions intToEnum(int index) {
  51         return NetworkPredictionOptions.values()[index];
  52     }
  53
  54     /**
  55      * Convert an enum NetworkPredictionOptions to integer.
  56      * @return Integer corresponding to NetworkPredictionOptions instance.
  57      */
  58     public int enumToInt() {
  59         return ordinal();
  60     }
  61
  62     /**
  63      * Convert an string to enum NetworkPredictionOptions.
  64      * @return NetworkPredictionOptions instance.
  65      */
  66     public static NetworkPredictionOptions stringToEnum(String name) {
  67         return valueOf(name.toUpperCase(Locale.US));
  68     }
  69
  70     /**
  71      * Convert an enum NetworkPredictionOptions to String.
  72      * @return String corresponding to NetworkPredictionOptions instance.
  73      */
  74     public String enumToString() {
  75         return name().toLowerCase(Locale.US);
  76     }
  77 }