com.davidmascharka.lips.SelectRoomSizeDialogFragment.java Source code

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Here is the source code for com.davidmascharka.lips.SelectRoomSizeDialogFragment.java

Source

package com.davidmascharka.lips;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;

import com.mascharka.indoorlocalization.R;

/**
 *  Copyright 2015 David Mascharka
 * 
 * This file is part of LIPS (Learning-based Indoor Positioning System).
 *
 *  LIPS 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
 *  any later version.
 *
 *  LIPS 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 LIPS.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * @author David Mascharka (david.mascharka@drake.edu)
 * 
 * Allows the user to specify a room/building size
 * 
 * Really nothing in here to customize. Simple dialog to get two
 * numbers for x and y. A third coordinate could be used to specify
 * how many floors if the application uses that. Would edit
 * dialog_select_room_size.xml to add a third EditText, then add a
 * third option to the onClick inside onCreateDialog here
 *
 */
public class SelectRoomSizeDialogFragment extends DialogFragment {
    /* The activity that creates an instance of this dialog fragment must
     * implement this interface in order to receive event callbacks.
     * The method passes the room size the user entered
     */
    public interface SelectRoomSizeDialogListener {
        public void onRoomSizeChanged(int width, int length);
    }

    // Use this instance of the interface to deliver action events
    SelectRoomSizeDialogListener listener;

    // Instantiate the SelectRoomSizeDialogListener
    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        // Verify the host activity implements the callback interface
        try {
            // Instantiate the listener so we can send events to the host
            listener = (SelectRoomSizeDialogListener) activity;
        } catch (ClassCastException e) {
            // The activity doesn't implement the interface
            throw new ClassCastException(activity.toString() + "must implement SelectRoomSizeDialogListener");
        }
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        LayoutInflater inflater = getActivity().getLayoutInflater();

        final View view = inflater.inflate(R.layout.dialog_select_room_size, null);

        builder.setTitle(R.string.dialog_select_room_size).setView(view)
                .setPositiveButton(R.string.accept, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        EditText width = (EditText) view.findViewById(R.id.room_width);
                        EditText length = (EditText) view.findViewById(R.id.room_length);

                        listener.onRoomSizeChanged(Integer.parseInt(width.getText().toString()),
                                Integer.parseInt(length.getText().toString()));
                    }
                }).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // Don't do anything - changes not saved
                    }
                });

        return builder.create();
    }
}