Android Open Source - opentraining Rename Workout Dialog Fragment

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * //from   w ww.  ja v  a 2s.  c o m
 * This is OpenTraining, an Android application for planning your your fitness training.
 * Copyright (C) 2012-2014 Christian Skubich
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */

package de.skubware.opentraining.activity.manage_workouts;

import java.io.File;
import java.io.FilenameFilter;
import java.util.HashSet;
import java.util.Set;

import de.skubware.opentraining.R;
import de.skubware.opentraining.basic.Workout;
import de.skubware.opentraining.db.DataProvider;
import de.skubware.opentraining.db.IDataProvider;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Dialog Fragment that handles renaming a Workout.
 * 
 * The user can enter a new name for the Workout or cancel this dialog. If there
 * is already a Workout with the same name, an error message(toast) will be
 * shown.
 * 
 * @author Christian Skubich
 * 
 */
public class RenameWorkoutDialogFragment extends DialogFragment {
  /** Tag for logging */
  private static final String TAG = "RenameWorkoutDialogFragment";

  /** Currently displayed {@link Workout}. */
  Workout mWorkout;

  /** ID for argument */
  private static String ARG_ID_WORKOUT = "workout";

  /**
   * Create a new instance of RenameWorkoutDialogFragment.
   */
  static RenameWorkoutDialogFragment newInstance(Workout workout) {
    RenameWorkoutDialogFragment f = new RenameWorkoutDialogFragment();

    Bundle args = new Bundle();
    args.putSerializable(ARG_ID_WORKOUT, workout);
    f.setArguments(args);

    return f;
  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mWorkout = (Workout) getArguments().getSerializable(ARG_ID_WORKOUT);

  }

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {
    LayoutInflater inflater = LayoutInflater.from(getActivity());
    final View v = inflater.inflate(R.layout.fragment_dialog_rename_workout, null);

    // show old name
    final EditText edittext_workout_name = (EditText) v.findViewById(R.id.edittext_workout_name);
    edittext_workout_name.setText(mWorkout.getName());

    return new AlertDialog.Builder(getActivity()).setTitle(mWorkout.getName()).setView(v).setCancelable(true)
        .setPositiveButton(getString(R.string.save), new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            String enterendName = edittext_workout_name.getText().toString();

            // check if name is valid(not empty, not used)
            if (enterendName.equals("")) {
              Toast.makeText(getActivity(), getString(R.string.workout_name_cannot_be_empty), Toast.LENGTH_LONG).show();
              return;
            }

            if (fileAlreadyExists(enterendName)) {
              Toast.makeText(getActivity(), getString(R.string.workout_already_exists), Toast.LENGTH_LONG).show();
              return;
            }

            // delete old Workout
            IDataProvider dataProvider = new DataProvider(getActivity());
            dataProvider.deleteWorkout(mWorkout);

            mWorkout.setName(enterendName);

            // save new Workout
            boolean success = dataProvider.saveWorkout(mWorkout);
            if (!success) {
              Log.wtf(TAG, "Error during saving workout. Old workout was lost. This should never happen.");
              Toast.makeText(getActivity(), getString(R.string.error_during_saving), Toast.LENGTH_LONG).show();
              return;
            }

            // finally update GUI
            TextView textview_workout_name = (TextView) getActivity().findViewById(R.id.textview_workout_name);
            textview_workout_name.setText(enterendName);

            // update Workout in Activity
            if (getActivity() instanceof WorkoutListActivity) {
              ((WorkoutListActivity) getActivity()).onWorkoutChanged(mWorkout);
            } else {
              // was launched by WorkoutDetailActivity
              // so set result to update WorkoutListActivity later
              Intent i = new Intent();
              i.putExtra(WorkoutListActivity.ARG_WORKOUT, mWorkout);
              getActivity().setResult(Activity.RESULT_OK, i);
            }

            dialog.dismiss();
          }
        }).setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
          }
        }).create();
  }

  /**
   * Checks if a Workout file with the same name already exists.
   * 
   * @param name
   *            The name to check
   * 
   * @return true if there is already such a file
   */
  private boolean fileAlreadyExists(String name) {
    // list files in workout directory that end with ".xml"
    String files[] = getActivity().getFilesDir().list(new FilenameFilter() {
      @Override
      public boolean accept(File dir, String filename) {
        if (filename.endsWith(".xml"))
          return true;
        else
          return false;
      }
    });
    Set<String> workout_names = new HashSet<String>();
    for (String s : files) {
      workout_names.add(s.split(".xml")[0]);
    }

    return workout_names.contains(name);
  }

}

Java Source Code List

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