text: /*
   * Copyright (C) 2014 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.settings;
  
  import android.content.Context;
  import android.content.DialogInterface;
  import android.content.Intent;
  import android.net.NetworkScoreManager;
  import android.net.NetworkScorerAppManager;
  import android.net.NetworkScorerAppManager.NetworkScorerAppData;
  import android.os.Bundle;
  import android.text.TextUtils;
  import android.util.Log;
  
  import com.android.internal.app.AlertActivity;
  import com.android.internal.app.AlertController;
  
  /**
   * Dialog to allow a user to select a new network scorer.
   *
   * <p>Finishes with {@link #RESULT_CANCELED} in all circumstances unless the scorer is successfully
   * changed or was already set to the new value (in which case it finishes with {@link #RESULT_OK}).
   */
  public final class ActiveNetworkScorerDialog extends AlertActivity implements
          DialogInterface.OnClickListener {
      private static final String TAG = "ActiveNetScorerDlg";
  
      private String mNewPackageName;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
  
          Intent intent = getIntent();
          mNewPackageName = intent.getStringExtra(NetworkScoreManager.EXTRA_PACKAGE_NAME);
  
          if (!buildDialog()) {
              finish();
          }
      }
  
      @Override
      public void onClick(DialogInterface dialog, int which) {
          switch (which) {
              case BUTTON_POSITIVE:
                  NetworkScoreManager nsm =
                      (NetworkScoreManager) getSystemService(Context.NETWORK_SCORE_SERVICE);
                  if (nsm.setActiveScorer(mNewPackageName)) {
                      setResult(RESULT_OK);
                  }
                  break;
              case BUTTON_NEGATIVE:
                  break;
          }
      }
  
      private boolean buildDialog() {
          NetworkScorerAppData newScorer = NetworkScorerAppManager.getScorer(this, mNewPackageName);
          if (newScorer == null) {
              Log.e(TAG, "New package " + mNewPackageName + " is not a valid scorer.");
              return false;
          }
  
          NetworkScorerAppData oldScorer = NetworkScorerAppManager.getActiveScorer(this);
          if (oldScorer != null && TextUtils.equals(oldScorer.mPackageName, mNewPackageName)) {
              Log.i(TAG, "New package " + mNewPackageName + " is already the active scorer.");
              // Set RESULT_OK to indicate to the caller that the "switch" was successful.
              setResult(RESULT_OK);
              return false;
          }
  
          // Compose dialog.
          CharSequence newName = newScorer.mScorerName;
          final AlertController.AlertParams p = mAlertParams;
          p.mTitle = getString(R.string.network_scorer_change_active_dialog_title);
          if (oldScorer != null) {
              p.mMessage = getString(R.string.network_scorer_change_active_dialog_text, newName,
                      oldScorer.mScorerName);
          } else {
              p.mMessage = getString(R.string.network_scorer_change_active_no_previous_dialog_text,
                      newName);
          }
          p.mPositiveButtonText = getString(R.string.yes);
          p.mNegativeButtonText = getString(R.string.no);
          p.mPositiveButtonListener = this;
          p.mNegativeButtonListener = this;
          setupAlert();
  
          return true;
      }
  }
  