src/com/android/settings/ActiveNetworkScorerDialog.java

   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
  17 package com.android.settings;
  18
  19 import android.content.Context;
  20 import android.content.DialogInterface;
  21 import android.content.Intent;
  22 import android.net.NetworkScoreManager;
  23 import android.net.NetworkScorerAppManager;
  24 import android.net.NetworkScorerAppManager.NetworkScorerAppData;
  25 import android.os.Bundle;
  26 import android.os.UserHandle;
  27 import android.text.TextUtils;
  28 import android.util.Log;
  29
  30 import com.android.internal.app.AlertActivity;
  31 import com.android.internal.app.AlertController;
  32
  33 /**
  34  * Dialog to allow a user to select a new network scorer.
  35  *
  36  * <p>Finishes with {@link #RESULT_CANCELED} in all circumstances unless the scorer is successfully
  37  * changed or was already set to the new value (in which case it finishes with {@link #RESULT_OK}).
  38  */
  39 public final class ActiveNetworkScorerDialog extends AlertActivity implements
  40         DialogInterface.OnClickListener {
  41     private static final String TAG = "ActiveNetScorerDlg";
  42
  43     private String mNewPackageName;
  44
  45     @Override
  46     protected void onCreate(Bundle savedInstanceState) {
  47         super.onCreate(savedInstanceState);
  48
  49         Intent intent = getIntent();
  50         mNewPackageName = intent.getStringExtra(NetworkScoreManager.EXTRA_PACKAGE_NAME);
  51
  52         if (!buildDialog()) {
  53             finish();
  54         }
  55     }
  56
  57     @Override
  58     public void onClick(DialogInterface dialog, int which) {
  59         switch (which) {
  60             case BUTTON_POSITIVE:
  61                 NetworkScoreManager nsm =
  62                     (NetworkScoreManager) getSystemService(Context.NETWORK_SCORE_SERVICE);
  63                 if (nsm.setActiveScorer(mNewPackageName)) {
  64                     setResult(RESULT_OK);
  65                 }
  66                 break;
  67             case BUTTON_NEGATIVE:
  68                 break;
  69         }
  70     }
  71
  72     private boolean buildDialog() {
  73         if (UserHandle.myUserId() != UserHandle.USER_OWNER) {
  74             Log.i(TAG, "Can only set scorer for owner user.");
  75             return false;
  76         }
  77         NetworkScorerAppData newScorer = NetworkScorerAppManager.getScorer(this, mNewPackageName);
  78         if (newScorer == null) {
  79             Log.e(TAG, "New package " + mNewPackageName + " is not a valid scorer.");
  80             return false;
  81         }
  82
  83         NetworkScorerAppData oldScorer = NetworkScorerAppManager.getActiveScorer(this);
  84         if (oldScorer != null && TextUtils.equals(oldScorer.mPackageName, mNewPackageName)) {
  85             Log.i(TAG, "New package " + mNewPackageName + " is already the active scorer.");
  86             // Set RESULT_OK to indicate to the caller that the "switch" was successful.
  87             setResult(RESULT_OK);
  88             return false;
  89         }
  90
  91         // Compose dialog.
  92         CharSequence newName = newScorer.mScorerName;
  93         final AlertController.AlertParams p = mAlertParams;
  94         p.mTitle = getString(R.string.network_scorer_change_active_dialog_title);
  95         if (oldScorer != null) {
  96             p.mMessage = getString(R.string.network_scorer_change_active_dialog_text, newName,
  97                     oldScorer.mScorerName);
  98         } else {
  99             p.mMessage = getString(R.string.network_scorer_change_active_no_previous_dialog_text,
 100                     newName);
 101         }
 102         p.mPositiveButtonText = getString(R.string.yes);
 103         p.mNegativeButtonText = getString(R.string.no);
 104         p.mPositiveButtonListener = this;
 105         p.mNegativeButtonListener = this;
 106         setupAlert();
 107
 108         return true;
 109     }
 110 }