/*
 * Copyright 2013 Google Inc.
 *
 * 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.google.android.apps.mytracks.fragments;

import com.google.android.apps.mytracks.util.PreferencesUtils;
import com.google.android.maps.mytracks.R;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;

/**
 * A DialogFrament to enable sync.
 * 
 * @author Jimmy Shih
 */
public class EnableSyncDialogFragment extends DialogFragment {

  /**
   * Interface for caller of this dialog fragment.
   * 
   * @author Jimmy Shih
   */
  public interface EnableSyncCaller {

    /**
     * Called when enable sync is done.
     */
    public void onEnableSyncDone(boolean enable);
  }

  public static final String ENABLE_SYNC_DIALOG_TAG = "enableSyncDialog";

  private EnableSyncCaller caller;
  private FragmentActivity fragmentActivity;

  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);
    try {
      caller = (EnableSyncCaller) activity;
    } catch (ClassCastException e) {
      throw new ClassCastException(
          activity.toString() + " must implement " + EnableSyncCaller.class.getSimpleName());
    }
  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    fragmentActivity = getActivity();
    if (PreferencesUtils.getBoolean(
        fragmentActivity, R.string.drive_sync_key, PreferencesUtils.DRIVE_SYNC_DEFAULT)) {
      dismiss();
      caller.onEnableSyncDone(false);
      return;
    }
  }

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {
    return new AlertDialog.Builder(fragmentActivity).setMessage(R.string.enable_sync_message)
        .setNegativeButton(R.string.generic_no, new OnClickListener() {
            @Override
          public void onClick(DialogInterface dialog, int which) {
            caller.onEnableSyncDone(false);
          }
        }).setPositiveButton(R.string.generic_yes, new OnClickListener() {
            @Override
          public void onClick(DialogInterface dialog, int which) {
            caller.onEnableSyncDone(true);
          }
        }).setTitle(R.string.enable_sync_title).create();
  }

  @Override
  public void onCancel(DialogInterface arg0) {
    caller.onEnableSyncDone(false);
  }
}

@@ -2789,32 +2789,424 @@
 g, int which) %7B%0A
+            /*%0A             * google_account_key can be set from the android backup service. If%0A             * the user wants to enable sync, make sure google_account_key is%0A             * cleared so the user can choose an account.%0A             */%0A            PreferencesUtils.setString(fragmentActivity, R.string.google_account_key,%0A                PreferencesUtils.GOOGLE_ACCOUNT_DEFAULT);%0A
             call

clear google_account_key before enabling drive sync in startup sequence